C1.6· 130 questions · 256 marks · 307 min · 2004–2025· Structured questions
Every Cambridge IGCSE Mathematics Paper 1 question on the four operations, laid out as 44 A4 pages with the mark scheme below. Nothing is left out. Free to read, no account.

![Question 2: Place brackets in the following calculation to make it a correct statement. 10 − 5 × 9 + 3 = 60 [1]](https://img.pastlit.com/crops/44d13a35-d287-4292-aed4-91e4d89260b0/q2.webp)
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![Question 10: 0763 2 (a) Calculate . 1.85 + 4.7×8 Answer(a) [1] (b) Write 0.0763 in standard form. Answer(b) [1]](https://img.pastlit.com/crops/2cd2f0a6-59d7-4645-88e0-286e35b9db74/q2.webp)
3 / 44![Question 12: Insert one pair of brackets to make the following equation correct. ForFor Examiner'sExaminer's 2 × 8 − 5 − 4 = 15 UseUse [1]](https://img.pastlit.com/crops/a29f599b-ff9f-4efe-beab-70aa7cfb16c3/q1.webp)

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5 / 44![Question 17: 9.6 × 7.8 − 0.53 × 86 4.95 (a) (i) Rewrite this calculation with each number written correct to 1 significant figure. Answer(a)(i) [1] (ii)…](https://img.pastlit.com/crops/3ceb1b3c-8bb7-4507-ba5e-e08986883ea4/q14.webp)

6 / 44![Question 20: The temperature on Monday is 3 °C. For On Tuesday it is 5 °C lower. Examiner's Use Find the temperature on Tuesday. Answer °C [1]](https://img.pastlit.com/crops/92d3a1af-3354-4cb2-9002-c81ebe2f6855/q1.webp)
![Question 21: Insert one pair of brackets into each calculation to make the answer correct. (a) 7 × 6 – 3 + 5 = 26 [1] (b) 8 – 6 × 4 – 1 = –10 [1]](https://img.pastlit.com/crops/db9304cc-8ebd-4189-a5ab-637b60ced984/q4.webp)
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8 / 44![Question 25: Work out. For Examiner's Use (a) 4 – 5 – 6 Answer(a) [1] − 8 (b) − 2 Answer(b) [1]](https://img.pastlit.com/crops/f90c2ed6-73b2-4d5c-bad1-4fb9a4627e2c/q8.webp)


9 / 44![Question 29: -2 1 20 a = b = c = -5 0 e 3 o e o e o Find (a) 4a, Answer(a) [2] f p (b) b – c. Answer(b) [2] f p ________________________________________…](https://img.pastlit.com/crops/8f8321ec-4bb3-4681-9369-66242019f1f6/q20.webp)
![Question 30: Put one pair of brackets into this equation to make it correct. For Examiner′s Use 3 + 5 × 4 – 2 = 13 [1] _________________________________…](https://img.pastlit.com/crops/c69a05ca-b8b0-4633-a771-0cb313abea3b/q1.webp)
![Question 31: Use a calculator to work out the following. (a) 3 (– 4 × 62 – 5) Answer(a) ............................................... [1] (b) 3 × tan …](https://img.pastlit.com/crops/c69a05ca-b8b0-4633-a771-0cb313abea3b/q6.webp)
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![Question 34: Calculate. 56.2 - 34.8 - 0.2 Answer ................................................ [1] __________________________________________________…](https://img.pastlit.com/crops/44750ab3-2c1d-411c-bdc0-74320fe5deae/q4.webp)

11 / 44![Question 37: 24 + 2.56 .2 Calculate 1.26 - 0.72 Answer ................................................ [1] ____________________________________________…](https://img.pastlit.com/crops/995b067f-2a2c-4637-9e3d-bce7f14bfad7/q2.webp)

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![Question 42: Calculate. (a) 3.2 × (5.7 – 1.3) + 4.8 Answer(a) ................................................ [1] (b) 2.54 - 0.85 Answer(b) ...........…](https://img.pastlit.com/crops/e750ec9a-ee37-46c2-b89d-578bcbe1eb55/q5.webp)
13 / 44![Question 44: 07 - 1.89 .5 Calculate 5.71 - 3.92 Answer ................................................ [1] ____________________________________________…](https://img.pastlit.com/crops/3e680caf-1f94-44d9-a5d5-e92111b61530/q5.webp)

![Question 46: In each part, fill in the missing number to make a correct statement. (a) ^- 6 + 11h # ................ = - 20 [1] 7 ........... (b) = [1] …](https://img.pastlit.com/crops/61915e9e-3992-4bac-87b9-f9858a7c2163/q8.webp)
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![Question 49: Calculate. 17.85 - 7.96 18 - 3.5 2 .................................................. [1]](https://img.pastlit.com/crops/21169036-4e1d-4ee8-bdff-d6a1824ab661/q5.webp)
15 / 44![Question 51: Write down the temperature which is 5 °C below –2 °C. ......................................... °C [1]](https://img.pastlit.com/crops/94bef9d0-0bae-478e-9db7-b48ded8dc376/q2.webp)
![Question 52: (a) Put one pair of brackets into this calculation to make it correct. 6 + 12 ÷ 2 × 3 = 8 [1] (b) Work out. 1.17 + 1.28 3.92 ..............…](https://img.pastlit.com/crops/47555cb7-c319-4d48-be19-3866e91f8491/q5.webp)

16 / 44![Question 55: (a) Work out. 5 - 3 + c - 1 m c 2 m [1] f p (b) A is the point (3, 6) and B is the point (5, 10). Work out AB. AB = [1] f p 1 (c) C is the …](https://img.pastlit.com/crops/c854d9b8-7ad8-4fea-ad4c-cf4b3b6aea74/q18.webp)
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20 / 44![Question 62: Work out. 3 - 1 (a) + d 2 n d 5n [1] f p 6 4 (b) - d 3 n d - 2 n [1] f p 2 (c) 4 d 5 n [1] f p](https://img.pastlit.com/crops/f831c1fe-fad2-4010-ae49-36c007ccf4b1/q14.webp)

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24 / 44![Question 69: Calculate. 5.39 - 0.98 0.743 - 0.0743 .................................................[1]](https://img.pastlit.com/crops/f1c89ef6-ab76-4684-bf44-d855e65dcd42/q4.webp)
![Question 70: - 3 6 Work out - c 5 m c 4m. [1] f p](https://img.pastlit.com/crops/f1c89ef6-ab76-4684-bf44-d855e65dcd42/q6.webp)

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![Question 74: Insert one pair of brackets to make this statement correct. 4 # 6 - 2 + 1 = 17 [1]](https://img.pastlit.com/crops/670b7646-e077-42f1-ba30-06015b0187a6/q3.webp)
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![Question 77: Calculate. (a) - 12 ' - 2 .................................................... [1] (b) 3 2 3 + 2 ..........................................…](https://img.pastlit.com/crops/f6e8d684-a7ef-4cfb-a438-1c70b62c2563/q8.webp)

27 / 44![Question 80: (a) Write down the temperature that is 7 °C below -3 °C. ................................................°C [1] (b) Work out the difference…](https://img.pastlit.com/crops/38d4efb8-0fc1-40d9-ba12-89b4e31a9600/q6.webp)

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![Question 84: Write down the number that is 7 more than -38. ................................................. [1]](https://img.pastlit.com/crops/d3580e05-0db2-43db-a4e3-3db2eca4b109/q5.webp)
![Question 85: Work out. 2 5 (a) + e- 3o e- 1o [1] f p 2 (b) 4 e- 5o [1] f p](https://img.pastlit.com/crops/7cfddb8b-1aeb-47f4-add9-6d026a7942ec/q10.webp)
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![Question 90: Write down the number that you (a) add to - 4 to give an answer of 9, ................................................. [1] (b) subtract fr…](https://img.pastlit.com/crops/da0eb517-c9b6-487e-a526-903eeaa0bdb8/q8.webp)
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32 / 44![Question 95: (a) = ! 2 1 Put a ring around each of the symbols that make this statement correct. 0.5 .................... 5% [1] (b) Insert one pair of …](https://img.pastlit.com/crops/fad89c2f-aea2-4b24-809a-5354f639b6b4/q12.webp)

33 / 44![Question 98: Put one pair of brackets into this calculation to make it correct. 150 - 17 - 5 # 2 2 = 33 [1]](https://img.pastlit.com/crops/e4f35e16-bd14-402b-9780-a20b03e66f6a/q9.webp)

![Question 100: - 0.711 Calculate , giving your answer correct to 4 significant figures. 0. 45 - 0.38 ................................................. [2]](https://img.pastlit.com/crops/6c8b689c-7c7f-43c2-9bd7-5f565c907d22/q11.webp)
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36 / 44![Question 107: Put one pair of brackets in each statement to make it correct. (a) 10 - 4 ' 2 + 18 = 21 [1] (b) 7 # 3 + 1 + 2 = 30 [1]](https://img.pastlit.com/crops/86a610b7-650b-4650-b487-4bdcf5d314f0/q6.webp)

![Question 109: Find the temperature that is 8 °C colder than - 5 °C. ............................................. °C [1]](https://img.pastlit.com/crops/4f4a137f-98cc-4116-b6ec-3f87f272896f/q6.webp)
![Question 110: Work out. - 4 + 6 # 3 ................................................. [1]](https://img.pastlit.com/crops/d92f9381-d160-4a62-a6db-587513596a48/q3.webp)
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![Question 113: (a) Work out. 28 - 16 ' 2 ................................................. [1] (b) Find the reciprocal of 4. 5 ...........................…](https://img.pastlit.com/crops/b99c3f8e-1e15-4a06-a0c3-2e94c5f2da3e/q6.webp)


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![Question 118: Put one pair of brackets in each calculation to make it correct. (a) 15 + 12 - 3 # 4 = 51 [1] (b) 15 + 12 - 3 # 4 = 96 [1]](https://img.pastlit.com/crops/a86598e8-3a89-40e7-8ec3-cb08bc4394aa/q7.webp)

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![Question 122: Work out - 6 # - 3 + 7 # 2 . ................................................. [2]](https://img.pastlit.com/crops/1a2f6f89-ea58-42d2-a2ca-311d10bd09f6/q7.webp)
40 / 44![Question 124: 3 24 Work out 1 + 1 . 3 4 Give your answer as a mixed number in its simplest form. ................................................. [3]](https://img.pastlit.com/crops/09933610-506d-4873-b380-845cef6fe8e4/q24.webp)
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42 / 44![Question 127: 4 24 Work out 3 - 1 . 2 7 Give your answer as a mixed number in its simplest form. ................................................. [3]](https://img.pastlit.com/crops/2b367ce3-e0fb-4252-82eb-f271acd9f535/q24.webp)

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44 / 44Answers below. Sit the paper first if you are practising.
Pastlit
Mathematics 0580 · The four operations — Paper 1
IGCSE · topical answer key — answer key (teacher use)
Question
Answer
Marks
1
1
3
2
1
1
1
1
1
2
1
1
2
3
1
2
4
2
2
1
2
2
4
4
2
1
3
2
4
1
2
1
2
1
2
1
1
2
2
4
1
2
1
1
2
2
1
4
1
2
1
2
2
1
3
1
3
2
3
2
3
3
1
2
3
3
2
4
1
1
2
1
2
1
2
1
2
1
2
2
3
2
2
1
2
1
3
4
3
2
1
3
1
2
2
3
2
1
2
2
3
4
2
1
2
2
2
2
1
1
1
2
2
1
1
1
2
2
2
2
3
2
2
3
2
5
3
2
2
2| Question | Answer | Marks | From |
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| 1 | see sheet | 1 | 0580/11 Oct/Nov 2004 |
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| 97 | see sheet | 2 | 0580/12 Feb/March 2022 |
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| 108 | see sheet | 2 | 0580/12 Feb/March 2023 |
| 109 | see sheet | 1 | 0580/12 May/June 2023 |
| 110 | see sheet | 1 | 0580/13 May/June 2023 |
| 111 | see sheet | 1 | 0580/12 Oct/Nov 2023 |
| 112 | see sheet | 2 | 0580/12 Feb/March 2024 |
| 113 | see sheet | 2 | 0580/11 May/June 2024 |
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| 122 | see sheet | 2 | 0580/12 Feb/March 2025 |
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| 128 | see sheet | 2 | 0580/11 Oct/Nov 2025 |
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| 130 | see sheet | 2 | 0580/12 Oct/Nov 2025 |
1 At a weather centre the temperature at midnight was −21 oC. For By noon the next day it had risen to −4 oC. Examiner's By how many degrees had the temperature risen? Use Answer oC [1]
1 marks
Mark scheme: 1 17 1 Not -17
2 Place brackets in the following calculation to make it a correct statement. 10 − 5 × 9 + 3 = 60 [1]
1 marks
Mark scheme: 2 (10 - 5) x (9 + 3) 1 Ignore omission of final bracket only
17 Ferdinand’s electricity meter is read every three months. For The reading on 1st April was 70683 units and on 1st July it was 71701 units. Examiner's Use (a) How many units of electricity did he use in those three months? Answer(a) units [1] (b) Electricity costs 8.78 cents per unit. Calculate his bill for those three months. Give your answer in dollars, correct to the nearest cent. Answer(b) $ [2]
3 marks
Mark scheme: 17 (a) 1018 1 (b) 89.38 final answer ft. 2 M1 for his (a) x 8.78 soi or SC1 for answer in cents. IGCSE EXAMINATIONS – NOVEMBER 2004 0580/0581 1
7 The table below shows the average monthly temperatures (°C) in the Islas Orcadas, Argentina. Examiner's Use Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1 1 0.5 –1 –5 –8 –9 –8 –5 –3 –1 0.5 (a) Work out the difference between the highest and the lowest average monthly temperature. Answer(a) °C [1] (b) The highest recorded temperature for July is x °C. This is 21 °C above the average for July shown in the table. Work out the value of x. Answer(b) x = [1]
2 marks
Mark scheme: 7 (a) 10 (allow –10) 1 (b) 12 1
1 The temperature at noon at an Antarctic weather centre was –15 °C. For At midnight it had fallen by 12 °C. Examiner's Use What was the temperature at midnight? Answer oC [1]
1 marks
Mark scheme: 1 –27 1
1 At noon one day the temperature is −9.5 °C. For By midnight the temperature has fallen by 3.6 °C. Examiner's What is the temperature at midnight? Use Answer °C [1]
1 marks
Mark scheme: Question Answers Mark Notes 1 −13.1 1
2 Insert brackets to make the following statement correct. 2 × 3 – 4 + 5 = 3 [1]
1 marks
Mark scheme: 2 2 × ( 3 − 4 ) + 5 = 3 1 & no other brackets
1 On a winter’s day in Vienna the maximum temperature was –2°C. For The minimum temperature was 11°C lower than this. Examiner's Write down the minimum temperature. Use Answer °C [1]
1 marks
Mark scheme: Question Answers Mark Notes 1 −13 1 Not 13–
3 On 1st August the level of water in a lake was −15 metres. A month later the level was 2 metres higher. 5 Write down the new level of water. 0 –5 –10 –15 Answer m [1]
1 marks
Mark scheme: 3 −13 1
0.0763 2 (a) Calculate . 1.85 + 4.7×8 Answer(a) [1] (b) Write 0.0763 in standard form. Answer(b) [1]
2 marks
Mark scheme: 2 (a) 0.00193(4….) 1 or 1.93(4…) × 10–3 (b) 7.63 × 10–2 1cao
1 Insert one pair of brackets to make the following equation correct. For Examiner's 2 × 8 − 5 − 4 = 15 Use [1]
1 marks
Mark scheme: Qu. Answers Mark Part Marks 1 2 × 8 − (5 − 4) = 15 1
1 Insert one pair of brackets to make the following equation correct. ForFor Examiner'sExaminer's 2 × 8 − 5 − 4 = 15 UseUse [1]
1 marks
Mark scheme: Qu. Answers Mark Part Marks 1 2 × 8 − (5 − 4) = 15 1
6 Martin recorded the outside temperature every three hours. At 07 00 the temperature was − 2°C. (a) This was 5°C higher than the temperature at 04 00. Write down the temperature at 04 00. Answer(a) °C [1] (b) At 10 00 the temperature was 11°C. Write down the increase in temperature between 07 00 and 10 00. Answer(b) °C [1]
2 marks
Mark scheme: 6 (a) –7 1 (b) 13 1 their (17000 − 15300 )7 10 2 M1 for 17000 15300 W1 for × 100 or answer 90(%) 17000
8 Examiner's Use 2x – 7 NOT TO SCALE x + 3 x The lengths, in centimetres, of the sides of a triangle are x , x + 3 and 2x − 7. The perimeter of the triangle is 52 cm. (a) Use this information to write down an equation in x. Answer(a) [1] (b) Find the value of x. Answer(b) x = [2]
3 marks
Mark scheme: 8 (a) x + x + 3 + 2x – 7 = 52 or better 1 (b) 14 2ft W1 for 4x or 56 seen Follow through their (a) if linear and equal to 52 for 1 or 2 marks.
1 On Monday the temperature was − 3°C. For On Tuesday the temperature fell by 5°C. Examiner's Use Write down the temperature on Tuesday. Answer °C [1]
1 marks
Mark scheme: Qu. Answers Mark Part Marks 1 −8 1 Accept negative or minus in place of ‘–’
3 Francis recorded a temperature of −4°C on Sunday. For By Monday it had gone down by 3°C. Examiner's Use (a) Find the temperature on Monday. Answer(a) °C [1] (b) On Tuesday the temperature was −1°C. Find the change in temperature between Monday and Tuesday. Answer(b) °C [1]
2 marks
Mark scheme: 3 (a) −7 1 (b) (+)6 1ft ft −1 − their (a)
14 9.6 × 7.8 − 0.53 × 86 4.95 (a) (i) Rewrite this calculation with each number written correct to 1 significant figure. Answer(a)(i) [1] (ii) Work out the answer to your calculation in part(a)(i). Do not use a calculator and show all your working. Answer(a)(ii) [2] (b) Use your calculator to work out the correct answer to the original calculation. Answer(b) [1]
4 marks
Mark scheme: 10 × 8 − 5.0 × 90 14 (a) (i) 1 5 (ii) 7(.0) cao 2 B1 for 80 (from 10 × 8) or 45 (from 0.5 × 90) or 5 (denominator) seen (b) 5.92 or 5.919(…..) 1
4 In a desert the temperature at noon was 38°C. At midnight the temperature was –3°C. (a) Find the change in temperature between noon and midnight. Answer(a) °C [1] (b) At 02 00 the temperature was 4°C below the midnight temperature. Write down the temperature at 02 00. Answer(b) °C [1]
2 marks
Mark scheme: 4 (a) 41 or −41 1 (b) −7 1 2 2
1 (a) Write down ten thousand and seventy three in figures. For Examiner's Answer(a) [1] Use (b) Work out 13 + 5 × 4 – 2. Write down all the steps of your working. Answer(b) [1]
2 marks
Mark scheme: Qu. Answers Mark Part Marks 1 (a) 10 073 1 (b) 13 + 20 − 2 = 31 1 Accept 20 seen with answer 31
1 The temperature on Monday is 3 °C. For On Tuesday it is 5 °C lower. Examiner's Use Find the temperature on Tuesday. Answer °C [1]
1 marks
Mark scheme: Qu. Answers Mark Part Marks 1 −2(°C) 1
4 Insert one pair of brackets into each calculation to make the answer correct. (a) 7 × 6 – 3 + 5 = 26 [1] (b) 8 – 6 × 4 – 1 = –10 [1]
2 marks
Mark scheme: 4 (a) 7 × (6 − 3) + 5 1 (b) 8 − 6 × (4 − 1) 1
9 The temperature at the top of a mountain is –12°C. The temperature at the bottom of the mountain is 18°C. (a) Work out the difference in these temperatures. Answer(a) °C [1] (b) 18°C is given correct to the nearest degree. Write down the upper bound for this temperature. Answer(b) °C [1]
2 marks
Mark scheme: 9 (a) 30 1 (b) 18.5 1 x
15 Without using your calculator, work out the following. For Show all the steps of your working and give each answer as a fraction in its simplest form. Examiner's Use 11 1 (a) − 12 3 Answer(a) [2] 1 11 (b) ÷ 4 13 Answer(b) [2]
4 marks
Mark scheme: 15 (a) 11 4 M1 correct use of a common denominator − oe 2 12 12 7 cao ww 0 A1 12 1 13 (b) × oe 2 M1 inversion and operation change 4 11 13 cao ww 0 44 A1 21
18 (a) Find the value of 7p – 3q when p = 8 and q = O5 . Answer(a) [2] (b) Factorise completely. 3uv + 9vw Answer(b) [2]
4 marks
Mark scheme: 18 (a) 71 2 M1 for 7×8 – 3×–5 or B1 56 and –15 (b) 3v (u + 3w) final answer 2 B1 for 3(uv + 3vw) or v (3u + 9w) As final answer
8 Work out. For Examiner's Use (a) 4 – 5 – 6 Answer(a) [1] − 8 (b) − 2 Answer(b) [1]
2 marks
Mark scheme: 8 (a) –7 1 (b) (+) 4 1
2 One January day in Munich, the temperature at noon was 3°C. At midnight the temperature was –8°C. Write down the difference between these two temperatures. Answer … °C [1] _____________________________________________________________________________________
1 marks
Mark scheme: 2 11 or −11 1
18 (a) –3 – 4 –7 2 5 Choose three different numbers from the list to complete this calculation. … + … + … = – 6 [1] (b) Find the value of 5x – 3y when x = –2 and y = 4. Answer(b) … [2] _____________________________________________________________________________________
3 marks
Mark scheme: 18 (a) –4, –7, [+]5 in any order 1 (b) –22 2 M1 for –10 and –12 seen SC1 for –10 +12 seen 5 k B1 f
5.27 - 0 .938 Calculate . 4 .89 - 4. 07 Give your answer correct to 4 signifi cant fi gures. Answer … [2] _____________________________________________________________________________________
2 marks
Mark scheme: 8 5.293 cao 2 B1 for 5.29 or 5.292 to 5.2927
4 -2 1 20 a = b = c = -5 0 e 3 o e o e o Find (a) 4a, Answer(a) [2] f p (b) b – c. Answer(b) [2] f p _____________________________________________________________________________________
4 marks
Mark scheme: 16 20 (a) 2 B1 for each correct component 12 − 3 (b) 2 B1 for each correct component 5 9 1 ( )
1 Put one pair of brackets into this equation to make it correct. For Examiner′s Use 3 + 5 × 4 – 2 = 13 [1] _____________________________________________________________________________________
1 marks
Mark scheme: Qu. Answer Mark Part Marks 1 3 + 5 × (4 – 2) 1 2
6 Use a calculator to work out the following. (a) 3 (– 4 × 62 – 5) Answer(a) … [1] (b) 3 × tan 30° + 2 × sin 45° Answer(b) … [1] _____________________________________________________________________________________
2 marks
Mark scheme: 6 (a) −447 1 (b) 2 1
1 Work out. 10 – 3 × 2 Answer … [1] __________________________________________________________________________________________
1 marks
Mark scheme: 1 4 1
5 (a) The temperature on Monday was –6°C. On Tuesday the temperature was 3 degrees lower. Write down the temperature on Tuesday. Answer(a) … °C [1] (b) The temperature on Saturday was –2°C. The temperature on Sunday was 8°C. Write down the difference in these two temperatures. Answer(b) … °C [1] __________________________________________________________________________________________
2 marks
Mark scheme: 5 (a) –9 1 (b) 10 or −10 1
4 Calculate. 56.2 - 34.8 - 0.2 Answer … [1] __________________________________________________________________________________________
1 marks
Mark scheme: 4 −107 1
11 –3 –5 1 0 3 Three different numbers from the list are added together to give the smallest possible total. Complete the sum below. … + … + … = … [2] __________________________________________________________________________________________
2 marks
Mark scheme: 11 –3, –5, 0 [=] –8 2 B1 for –3, –5 and 0 in any order seen on left hand side. or B1 for –8 seen on answer line in correct position
1 Insert one pair of brackets only to make the following statement correct. 6 + 5 × 10 – 8 = 16 [1] __________________________________________________________________________________________
1 marks
Mark scheme: Qu. Answer Mark Part marks 1 6 + 5 × (10 – 8) = 16 1 One pair of brackets only
8.24 + 2.56 .2 Calculate 1.26 - 0.72 Answer … [1] __________________________________________________________________________________________
1 marks
Mark scheme: 2 20 1
2 The temperature in Berlin is –7 °C and the temperature in Istanbul is –3 °C. (a) Write down how many degrees colder it is in Berlin than it is in Istanbul. Answer(a) … °C [1] (b) Sydney is 23 degrees warmer than Berlin. Write down the temperature in Sydney. Answer(b) … °C [1] __________________________________________________________________________________________
2 marks
Mark scheme: 2 (a) 4 1 (b) 16 1
8 (a) Work out. (–6) – (–8) Answer(a) … [1] (b) Write in the missing number. –3 × … = 18 [1] __________________________________________________________________________________________
2 marks
Mark scheme: 8 (a) [+] 2 1 (b) −6 1
6.4 + 7.3 .18 (a) Calculate 19.56 - 3.51 Give your answer correct to 2 significant figures. Answer(a) … [2] (b) Write the following numbers in order of size, smallest first. 5 57% 0.5077 0.507 9 Answer(b) … < … < … < … [2] __________________________________________________________________________________________
4 marks
Mark scheme: 18 (a) [0].85 final answer 2 B1 for 0.853[5…] or 13.7 and 16.05 seen 5 (b) 0.507 0.5077 57% 2 M1 for 3 in the correct order 9 or B1 for [0].57 and [0].55… or 0.56
2 At midnight the temperature in Newtown was –8 °C. At noon the next day the temperature in Newtown was 9 °C. Work out the rise in temperature from midnight to noon. Answer … °C [1] __________________________________________________________________________________________
1 marks
Mark scheme: 2 [+]17 1 4
5 Calculate. (a) 3.2 × (5.7 – 1.3) + 4.8 Answer(a) … [1] (b) 2.54 - 0.85 Answer(b) … [1] __________________________________________________________________________________________
2 marks
Mark scheme: 5 (a) 18.88 cao final answer 1 (b) 1.3 1 13 12
1 Write down the difference in temperature between 8°C and −9°C. Answer … °C [1]
1 marks
Mark scheme: Question Answer Mark Part marks 1 17 1
2.07 - 1.89 .5 Calculate 5.71 - 3.92 Answer … [1] __________________________________________________________________________________________
1 marks
Mark scheme: 5 [0].101 or [0].1005 to [0].1006 1
10 (a) At 9 am the temperature was –3°C. At 1pm the temperature had risen by 5°C. Work out the temperature at 1pm. Answer(a) … °C [1] (b) Work out –7 – 2. Answer(b) … [1] __________________________________________________________________________________________
2 marks
Mark scheme: 10 (a) 2 1 (b) −9 1 2
8 In each part, fill in the missing number to make a correct statement. (a) ^- 6 + 11h # … = - 20 [1] 7 … (b) = [1] 8 176
2 marks
Mark scheme: 8 (a) –4 1 (b) 154 1 2
2 Calculate. 4 3.07 + 2 5.03 - 1.79 … [1]
1 marks
Mark scheme: 2 5.89 or 5.885 to 5.886 1
21 The table shows the temperature each night for a week. Monday Tuesday Wednesday Thursday Friday Saturday Sunday –3 °C 1 °C – 4 °C –2 °C 5 °C 3 °C –1 °C (a) Which night was the coldest? … [1] (b) Find the difference between the temperature on Monday night and the temperature on Tuesday night. … °C [1] (c) Find the range. … °C [1] (d) Find the median. … °C [1]
4 marks
Mark scheme: 21 (a) Wed[nesday] 1 (b) 4 1 (c) 9 1 (d) –1 nfww 1 1
5 Calculate. 17.85 - 7.96 18 - 3.5 2 … [1]
1 marks
Mark scheme: 5 1.72 1
6 2 3 –4 –6 –8 From the list of numbers, write down (a) three numbers whose sum is –12, … , … , … [1] (b) two numbers whose product is –24. … , … [1]
2 marks
Mark scheme: 6 (a) 2 −6 −8 1 (b) 3 −8 1 1
2 Write down the temperature which is 5 °C below –2 °C. … °C [1]
1 marks
Mark scheme: 2 −7 1
5 (a) Put one pair of brackets into this calculation to make it correct. 6 + 12 ÷ 2 × 3 = 8 [1] (b) Work out. 1.17 + 1.28 3.92 … [1]
2 marks
Mark scheme: 5 (a) 6 + 12 ÷ (2 × 3) = 8 1 (b) 0.625 oe 1 15
7 The temperature at midnight was –8°C. The temperature at 5 am was –3°C. (a) Work out the difference between the two temperatures. … °C [1] (b) The temperature at midday was 9°C higher than the temperature at 5 am. Work out the temperature at midday. … °C [1]
2 marks
Mark scheme: 7 (a) 5 1 (b) 6 1
2 Work out. −2 + 7 – 8 … [1]
1 marks
Mark scheme: 2 –3 1
18 (a) Work out. 5 - 3 + c - 1 m c 2 m [1] f p (b) A is the point (3, 6) and B is the point (5, 10). Work out AB. AB = [1] f p 1 (c) C is the point (5, 8) and CD = c 2 m. Find the co-ordinates of the point D. ( … , … ) [1]
3 marks
Mark scheme: 18 (a) 1 1 2 (b) 1 4 (c) (6, 10) 1
1 Write down the difference in temperature between -4 °C and -9 °C. … °C [1]
1 marks
Mark scheme: Question Answer Marks Part Marks 1 5 1
21 (a) Work out. 3 1 + c- 2 m c- 1m [1] f p (b) y 10 9 A 8 7 6 B 5 4 3 2 1 x 0 1 2 3 4 5 6 7 8 9 10 Points A and B are marked on the grid. - 4 BC = c 0m (i) On the grid, plot the point C. [1] (ii) Write AC as a column vector. [1] f p
3 marks
Mark scheme: 4 21 (a) 1 −3 (b) (i) Point at (3, 5) 1 JJJG 1 (ii) 1FT FT their AC −3 1
10 The table shows the temperatures in five places at 10 am one day in January. Place Temperature (°C) Helsinki -7 Chicago -10 London 3 Moscow -4 Bangkok 26 (a) Which place was the coldest? … [1] (b) At 2 pm the temperature in Helsinki had increased by 4 °C. Write down the temperature in Helsinki at 2 pm. … °C [1]
2 marks
Mark scheme: 10(a) Chicago 1 10(b) −3 1
18 (a) Work out. 3 + 2 # - 4 … [1] (b) In each of these, insert one pair of brackets to make the statement correct. (i) 3 # 5 + 2 + 2 = 23 [1] (ii) 12 ÷ 4 + 2 = 2 [1]
3 marks
Mark scheme: 18(a) –5 1 18(b)(i) 3 × (5 + 2) + 2 = 23 1 18(b)(ii) 12 ÷ (4 + 2) = 2 1
7 The daily temperature, in °C, at 3 pm in a town is shown below. Monday Tuesday Wednesday Thursday Friday Saturday Sunday 3 -2 1 2 -4 3 5 (a) Which day had the coldest temperature? … [1] (b) Work out the difference in the temperatures on Friday and Saturday. … °C [1]
2 marks
Mark scheme: 7(a) Friday 1 7(b) 7 1
11 Complete these calculations to make them correct. 24 + 8 (a) = … 4 [1] (b) -18 ÷ … = 2 [1] 7 … 21 (c) # = 8 40 … [1]
3 marks
Mark scheme: 11(a) 8 1 11(b) −9 1 11(c) 3 1 or equivalent fraction 5
14 Work out. 3 - 1 (a) + d 2 n d 5n [1] f p 6 4 (b) - d 3 n d - 2 n [1] f p 2 (c) 4 d 5 n [1] f p
3 marks
Mark scheme: 14(a) 2 1 7 14(b) 2 1 5 14(c) 8 1 20
2 One day, at noon, in Maseru, the temperature was 17 °C. At midnight the temperature was 20 °C lower. Work out the temperature at midnight. … °C [1]
1 marks
Mark scheme: 2 −3 1
7 Work out. 6.32 + 2.06 4.15 - 0.12 Give your answer correct to 1 decimal place. … [2]
2 marks
Mark scheme: 7 2.1 2 B1 for 2.08 or 2.079… or 2.10
13 The table shows the temperature at midday in some cities on 1st February. City Temperature Berlin 6 °C Moscow –10 °C Stockholm 1 °C Toronto 0 °C Warsaw –2 °C (a) Write down the city with the lowest temperature. … [1] (b) Work out the difference between the temperature in Berlin and the temperature in Warsaw. … °C [1] (c) The temperature in Minsk was 3 °C higher than the temperature in Moscow. Work out the temperature in Minsk. … °C [1]
3 marks
Mark scheme: 13(a) Moscow 1 13(b) 8 1 13(c) –7 1
19 (a) Work out. 5 2 (i) + c- 1m c 6 m [1] f p - 5 (ii) 4 c 2m [1] f p (b) y 4 3 P 2 1 x 0 –4 –3 –2 –1 1 2 3 4 –1 –2 –3 –4 4 P is the point (-1, 2) and PQ = c- 3m. Find the co-ordinates of Q. ( … , … ) [1]
3 marks
Mark scheme: 19(a)(i) 7 1 5 19(a)(ii) − 20 1 8 19(b) 3, −1 1
9 (a) On Monday, the lowest temperature was –12 °C. The highest temperature was 4 °C. Work out the difference between these temperatures. … °C [1] (b) On Tuesday, the highest temperature was –3 °C. The lowest temperature was 8 °C lower than this. Work out the lowest temperature on Tuesday. … °C [1]
2 marks
Mark scheme: 9(a) 16 1 9(b) –11 1
16 Calculate. (a) .413 … [1] (b) - 4 - 5 2 - 2 # 4 # - 3 ^ h … [1] 4.88 - 2.36 (c) 5.3 + 1.9 … [1] (d) 56.25 - 3 15.625 … [1]
4 marks
Mark scheme: 16(a) 68.921 1 16(b) –53 1 16(c) [0].35 1 16(d) 5 1
4 Calculate. 5.39 - 0.98 0.743 - 0.0743 … [1]
1 marks
Mark scheme: 4 6.59 or 6.594 to 6.595 1
2 - 3 6 Work out - c 5 m c 4m. [1] f p
1 marks
Mark scheme: 6 5 1 1
9 (a) At noon on Wednesday, the temperature was 5 °C. At midnight, the temperature was 8 °C lower. Work out the temperature at midnight. … °C [1] (b) At noon on Saturday, the temperature was 15 °C. At midnight, the temperature was –3 °C. Work out the difference in these temperatures. … °C [1]
2 marks
Mark scheme: 9(a) −3 1 9(b) 18 1
4 The temperature at 07 00 is -3 °C. This temperature is 11 °C higher than the temperature at 01 00. Find the temperature at 01 00. … °C [1]
1 marks
Mark scheme: 4 −14 1
5 (a) On Monday the temperature at midday is 4 °C and the temperature at midnight is -3 °C. Work out the difference between these two temperatures. … °C [1] (b) On Wednesday the temperature at midday is -1 °C. By 7 pm the temperature has fallen by 4 °C. Work out the temperature at 7 pm. … °C [1]
2 marks
Mark scheme: 5(a) 7 1 5(b) −5 1
3 Insert one pair of brackets to make this statement correct. 4 # 6 - 2 + 1 = 17 [1]
1 marks
Mark scheme: 3 4 × (6 – 2) + 1 = 17 1
5 (a) Subtract 123 from 1 million. … [1] (b) Subtract 9 from 2. … [1]
2 marks
Mark scheme: 5(a) 999 877 1 5(b) −7 1
5 Giulio’s reaction times are measured in two games. In the first game his reaction time is 13 of a second. In the second game his reaction time is 18 of a second. Find the difference between the two reaction times. … s [1]
1 marks
Mark scheme: 5 5 1 or 0.208 or 0.2083… 24
8 Calculate. (a) - 12 ' - 2 … [1] (b) 3 2 3 + 2 … [1]
2 marks
Mark scheme: 8(a) 6 1 8(b) 2.15 or 2.154 … 1
2 The lowest temperature recorded at Scott Base in Antarctica is -57.0 °C. The highest temperature recorded at Scott Base is 63.8 °C more than this. What is the highest temperature recorded at Scott Base? … °C [1]
1 marks
Mark scheme: 2 6.8 1
5 Put one pair of brackets into each calculation to make it correct. (a) 8 + 6 - 2 # 5 = 28 [1] (b) 8 + 6 - 2 # 5 = 60 [1]
2 marks
Mark scheme: 5(a) 8 + (6 – 2) × 5 = 28 1 5(b) (8 + 6 – 2) × 5 = 60 1
6 (a) Write down the temperature that is 7 °C below -3 °C. … °C [1] (b) Work out the difference in temperature between -4 °C and 4 °C. … °C [1]
2 marks
Mark scheme: 6(a) −10 1 6(b) 8 1
3 (a) The temperature on Monday was -7 °C. The temperature on Tuesday was 5 °C lower than on Monday. The temperature on Wednesday was 8 °C higher than on Tuesday. Find the temperature on Wednesday. … °C [2] (b) Kyra has a faulty thermometer. It always shows the temperature as 2 °C higher than the actual temperature. The temperature on the thermometer is T °C. Write an expression, in terms of T, for the actual temperature. … °C [1]
3 marks
Mark scheme: 3(a) −4 2 B1 for −12 seen or M1 for −7 − 5 + 8 or better 3(b) T – 2 cao 1
5 Put one pair of brackets in each statement to make it correct. (a) 16 ' 8 + 4 # 2 = 1 [1] (b) 16 ' 8 + 4 # 2 = 12 [1]
2 marks
Mark scheme: 5(a) 16 ÷ (8 + 4 × 2) = 1 1 5(b) (16 ÷ 8 + 4) × 2 = 12 1
68 + 183 Edelgard tries to calculate . 9 - 5 (a) She types into her calculator 68 + 18 ' 9 - 5 . Explain why this does not give Edelgard the correct answer. … [1] 68 + 18 (b) Work out the correct answer to . 9 - 5 … [1]
2 marks
Mark scheme: 3(a) Correct reason 1 3(b) 21.5 oe 1
5 Write down the number that is 7 more than -38. … [1]
1 marks
Mark scheme: 5 − 31 1
10 Work out. 2 5 (a) + e- 3o e- 1o [1] f p 2 (b) 4 e- 5o [1] f p
2 marks
Mark scheme: 10(a) 7 1 −4 10(b) 8 1 − 20
8 Work out the difference in temperature between - 6 °C and 5 °C. … °C [1]
1 marks
Mark scheme: 8 11 1
7 (a) This table shows the temperature, in °C, at midnight and at 3 pm for four cities on the same day. City Temperature at midnight (°C) Temperature at 3 pm (°C) Sydney 21 28 Oslo –3 1 Toronto –18 –8 Seoul –5 4 Use the table to complete this statement. The city with the biggest difference in temperature between midnight and 3 pm is … with a difference of … °C. [2] (b) The temperature at midnight in Moscow was –11 °C. At 3 pm the temperature has increased by 5 °C. Work out the temperature at 3 pm. … °C [1]
3 marks
Mark scheme: 7(a) Toronto 10 2 B1 for each 7(b) –6 1
2 (a) Find the value of 225. … [1] 2 (b) Write down the reciprocal of . 3 … [1] (c) Work out three‑quarters of one‑third. … [1] (d) Work out - 7 - ( 6 - 8) . … [1]
4 marks
Mark scheme: 2(a) 15 1 2(b) 1 1 12 oe 2(c) 1 1 oe 4 2(d) –5 1
6 (a) Without using a calculator, work out 9 + 5 # 7 - 4 ' 2 . You must show all your working. … [2] (b) Insert one pair of brackets into this statement to make it correct. 9 + 5 # 7 - 4 ' 2 = 96 [1]
3 marks
Mark scheme: 6(a) 9 + 35 − 2 M1 42 A1 6(b) (9 + 5) × 7 – 4 ÷ 2 = 96 cao 1
8 Write down the number that you (a) add to - 4 to give an answer of 9, … [1] (b) subtract from - 9 to give an answer of - 4 . … [1]
2 marks
Mark scheme: 8(a) 13 1 8(b) −5 1
3 Write down the number that is 23 less than - .16 . … [1]
1 marks
Mark scheme: 3 –24.6 1
5 218 Without using a calculator, work out 1 + . 6 5 You must show all your working and give your answer as a mixed number in its simplest form. … [3]
3 marks
Mark scheme: 18 25 or 55 12 M1 25 k or 55 k 12 k and Accept and 30 30 30 k 30 k 7 A2 67 k 37 k 2 cao A1 for or 1 30 30 k 30 k
8 The temperature at midnight is -8.5 °C. The temperature at 11 am is -1 °C. Work out the difference between the temperature at midnight and the temperature at 11 am. … °C [1]
1 marks
Mark scheme: 8 7.5 1
8 The temperature at midnight was -8 °C. The temperature at noon is 6 °C. (a) Work out the difference between these two temperatures. … °C [1] (b) The temperature at 7 am is 5 °C higher than the temperature at midnight. Work out the temperature at 7 am. … °C [1]
2 marks
Mark scheme: 8(a) 14 1 8(b) –3 1
12 (a) = ! 2 1 Put a ring around each of the symbols that make this statement correct. 0.5 … 5% [1] (b) Insert one pair of brackets to make this statement correct. 7 - 3 - 1 + 2 = 7 [1]
2 marks
Mark scheme: 12(a) ≠ and > indicated 1 12(b) 7– (3 – 1) + 2 = 7 cao 1
11 322 Without using a calculator, work out + . 12 4 You must show all your working and give your answer as a mixed number in its simplest form. … [3]
3 marks
Mark scheme: 22 11 9 M1 Allow any correct common denominator + oe 12k 12 12 2 A2 20 13 cao A1 for 12 or equivalent improper fraction or mixed number
6 This is Edha’s method to work out 99 # 27 without using a calculator. 99 # 27 = 100 # 27 - 27 = 2700 - 27 = 2673 Show how to use Edha’s method to work out 99 # 68 without using a calculator. [2]
2 marks
Mark scheme: 6 100 × 68 − 68 2 M1 for 100 × 68 − 68 = 6800 − 68 = 6732
9 Put one pair of brackets into this calculation to make it correct. 150 - 17 - 5 # 2 2 = 33 [1]
1 marks
Mark scheme: 9 2 1 150 − 17 − ( 5 × 2 ) = 33
20 Balavan has n marbles. n He gives his sister marbles. 5 n He gives his cousin marbles. 2 Write an expression, in terms of n, for the number of marbles that Balavan has now. Give your answer in its simplest form. … [2]
2 marks
Mark scheme: 20 3 2 7 1 1 n B1 for n or n − n − n oe 10 10 5 2
1 - 0.711 Calculate , giving your answer correct to 4 significant figures. 0. 45 - 0.38 … [2]
2 marks
Mark scheme: 11 4.286 cao 2 30 B1 for 4.285[7...] or 4.29 or or 7 2 4 7 or for correctly rounding their more accurate decimal to 4sf
16 v = 3 - 5t (a) Work out the value of v when t = 4. v = … [1] (b) Make t the subject of the formula. t = … [2]
3 marks
Mark scheme: 16(a) −17 1 16(b) 3 v v 3 2 M1 for or final answer 5 5 v 3 5t = 3 – v or v – 3 = −5t or t 5 5
22 The table shows the population and area of three countries in 2020. Country Population Area (km2) Nigeria .206 # 108 9.11 # 10 5 Comoros 8.70 # 10 5 1.86 # 10 3 Vietnam 9.73 # 10 7 3.10 # 10 5 (a) Calculate the difference in population between Nigeria and Vietnam. … [1] (b) Which of Comoros or Vietnam has the greater population density? You must show all your working. population Population density = 2 > area(km ) H … [3]
4 marks
Mark scheme: 22(a) 108 700 000 1 or 1.087 × 108 22(b) 8.70 × 105 ÷ 1.86 × 103 oe M1 9.73 × 107 ÷ 3.10 × 105 oe M1 Comoros A1 Dependent on M2
7 Put one pair of brackets into each calculation to make it correct. (a) 6 # 7 - 5 + 4 = 16 [1] (b) - 2 2 + 24 ' 12 - 4 = 2 [1]
2 marks
Mark scheme: 7(a) 6 × ሺ 7 −5 ሻ+ 4 = 16 1 7(b) (−2 )ଶ+ 24 ÷ 12 − 4 = 2 1
8 At noon, the temperature is 4 °C. At midnight, the temperature is - 9 °C. Work out the difference in temperature between noon and midnight. … °C [1]
1 marks
Mark scheme: 8 13 or −13 1
7 The temperature, in °C, is recorded at the same time in six cities. London Helsinki Oslo Paris Madrid Berlin 6 –2 –5 7 9 2 (a) Which city has the coldest temperature? … [1] (b) What is the difference in temperature between Helsinki and Paris? … °C [1]
2 marks
Mark scheme: 7(a) Oslo 1 7(b) 9 1
1 513 Without using a calculator, work out + . 3 6 You must show all your working and give your answer as a mixed number in its simplest form. … [2]
2 marks
Mark scheme: 13 2 5 M1 i.e. correct fractions with common + oe denominator 6k 6 6 1 A1 16 cao
6 Put one pair of brackets in each statement to make it correct. (a) 10 - 4 ' 2 + 18 = 21 [1] (b) 7 # 3 + 1 + 2 = 30 [1]
2 marks
Mark scheme: 6(a) (10 − 4) ÷ 2 + 18 = 21 1 6(b) 7 × (3 + 1) + 2 = 30 1
3 -7 12 -3 2 8 -6 15 -4 -8 From the list of numbers, find (a) all the numbers which are less than -5 … [1] (b) the product of the largest number and the smallest number. … [1]
2 marks
Mark scheme: 3(a) −6, −7, −8 1 3(b) −120 1
6 Find the temperature that is 8 °C colder than - 5 °C. … °C [1]
1 marks
Mark scheme: 6 –13 1
3 Work out. - 4 + 6 # 3 … [1]
1 marks
Mark scheme: 3 14 1
6 Write down the number that is 9 greater than - 23 . … [1]
1 marks
Mark scheme: 6 –14 1
10 - 9 - 7 - 3 - 1 0 2 5 6 8 From this list of numbers, find (a) the highest number possible from the product of two of the numbers … [1] (b) the lowest number possible from the product of three of the numbers. … [1]
2 marks
Mark scheme: 10(a) 63 1 10(b) −432 1
6 (a) Work out. 28 - 16 ' 2 … [1] (b) Find the reciprocal of 4. 5 … [1]
2 marks
Mark scheme: 6(a) 20 1 6(b) 1 1 1.25 or 1 oe 4
7 The temperature on Monday is –27 °C. The temperature on Tuesday is 15 °C higher than on Monday. Work out the temperature on Tuesday. … °C [1]
1 marks
Mark scheme: 7 12 1
6 The temperature at midnight is -4 °C. The temperature at noon is 25 °C. Work out the difference between these two temperatures. … °C [1]
1 marks
Mark scheme: 6 29 1
2 Put one pair of brackets into this calculation to make it correct. 5 + 4 # 3 + 9 = 53 [1]
1 marks
Mark scheme: 2 5 + 4 × (3 + 9) = 53 1
9 One day the temperature in Tokyo is - 5 °C and the temperature in Manila is 18 °C. (a) Work out the difference between these two temperatures. … °C [1] (b) The temperature in Tokyo rises by 4 °C. Find the new temperature in Tokyo. … °C [1]
2 marks
Mark scheme: 9(a) 23 1 9(b) –1 1
7 Put one pair of brackets in each calculation to make it correct. (a) 15 + 12 - 3 # 4 = 51 [1] (b) 15 + 12 - 3 # 4 = 96 [1]
2 marks
Mark scheme: 7(a) 15 + (12 − 3) × 4 = 51 1 7(b) (15 + 12 − 3) × 4 = 96 1
11 The temperature in town A is - 8 °C and the temperature in town B is 16 °C. (a) Find the difference in these two temperatures. … °C [1] (b) The temperature in town A rises by 12 °C. Find the temperature in town A now. … °C [1]
2 marks
Mark scheme: 11(a) 24 1 11(b) 4 1
18 Simplify. 18 x 6 3x 2 … [2]
2 marks
Mark scheme: 18 6x4 final answer 2 B1 for 6xk (k ≠ 0) or mx4 (m ≠ 0) as final answer or correct answer spoilt
1 11 18 Without using a calculator, work out 2 - 1 . 4 12 You must show all your working and give your answer as a fraction in its simplest form. … [3]
3 marks
Mark scheme: 18 B1 Correct step for dealing with mixed numbers 9 23 1 11 oe or − 9 k 23k 4 12 14 12 Allow or 4 k 12 k oe M1 Correct method to find common denominator 27 23 11 and 31 and 3 11 12 12 12 12 e.g. 2 and 1 12 12 1 A1 cao 3
7 Work out - 6 # - 3 + 7 # 2 . … [2]
2 marks
Mark scheme: 7 32 2 B1 for 18 or 14
11 19.5 # 20 .4 = 397. 8 Work out. (a) 1.95 # 2 .04 … [1] (b) 3978 ' 204 … [1]
2 marks
Mark scheme: 11(a) 3.978 1 11(b) 19.5 1
1 3 24 Work out 1 + 1 . 3 4 Give your answer as a mixed number in its simplest form. … [3]
3 marks
Mark scheme: 24 1 3 4 7 3 nfww B1 for or oe 12 3 4 1 3 or for 2 + + oe 3 4 16 21 4 9 M1 for and or and 12 12 12 12
12 Tim has a method for multiplying a number by 99. He shows his method for 53 # 99 . 53 # 99 = 53 # 100 - 53 = 5300 - 53 = 5247 Work out 85 # 99 using Tim’s method. … [2]
2 marks
Mark scheme: 12 85 × 99 M1 85 100 − 85 8500 − 85 8415 A1
3 (a) Write down 169 . … [1] (b) Work out the value of 24. … [1] (c) Work out the value of 10 -2 . … [1] (d) Work out -18 ' -4 . … [1] (e) Work out 1.6 # 0. 02 . … [1]
5 marks
Mark scheme: 3(a) 13 1 3(b) 16 1 3(c) 1 1 or 0.01 100 3(d) 9 1 1 or 4.5 or 4 2 2 3(e) 0.032 1
1 4 24 Work out 3 - 1 . 2 7 Give your answer as a mixed number in its simplest form. … [3]
3 marks
Mark scheme: 24 13 3 27 114 cao nfww B2 for 14 7 k 11k or B1 for or 2 k 7 k 49 22 M1 for and 14 14 7 8 or 3 and 1 14 14 their 7 7 their 11 2 or and 2 7 7 2 or211 and 8 14 14 35 8 or and 14 14 8 or 72 and 14 14
11 The temperature at midnight is - 2°C . The temperature at noon is 5 °C. (a) Find the difference between these temperatures. … °C [1] (b) The temperature at 9 am is 8 °C higher than the temperature at midnight. Work out the temperature at 9 am. … °C [1]
2 marks
Mark scheme: 11(a) 7 1 11(b) 6 1
11 2 18 Work out - . 18 9 Give your answer as a fraction in its simplest form. … [2]
2 marks
Mark scheme: 18 7 2 11 4 cao M1 for – oe 18 18 18
9 The temperature at midday on Monday is –3 °C. The temperature at 10 pm on Monday is –15 °C. (a) Calculate the difference between these two temperatures. … °C [1] (b) The temperature at midday on Tuesday is 23 °C higher than the temperature at 10 pm on Monday. Calculate the temperature at midday on Tuesday. … °C [1]
2 marks
Mark scheme: 9(a) 12 1 9(b) 8 1