Download [PDF] October 2018 CAIE P2 Mark Schemes 0845 Mathematics Cambridge Primary Checkpoint

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This document consists of 10 printed pages. IB18 10_0845_02/5RP © UCLES 2018 [Turn over Cambridge International Examinations Cambridge Primary Checkpoint MATHEMATICS 0845/02 Paper 2 October 2018 MARK SCHEME Maximum Mark: 40 Published This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the details of the discussions that took place at an Markers’ meeting before marking began, which would have considered the acceptability of alternative answers. Mark schemes should be read in conjunction with the question paper and the End of Series Report. Cambridge will not enter into discussions about these mark schemes. Mark scheme annotations and abbreviations M1 method mark A1 accuracy mark B1 independent mark FT follow through after error dep dependent oe or equivalent cao correct answer only isw ignore subsequent working soi seen or implied

0845/02 Primary Checkpoint Mathematics - Mark Scheme October 2018 Page 2 of 10 Question Answer Marks Further Information 1 102 105 106 109 1 Allow conversion to decimals. 2 70 × 9 = 630 or 90 × 7 = 630 1 3 4086 and 3686 1 Both numbers must be correct for 1 mark. 4 (Up 3 Right 2) Up 1 Right 4 Down 4 Left 6 1 All four lines must be correct for 1 mark. Allow 1 Up, 4 Right etc. 5(a) 500ml 400 300 200 100 1 Line should pass through the mark for 175 ml. Allow small discrepancy as long as it touches 175 or the part of line drawn extended touches 175. 5(b) 0.225 ( l) 1 6 35 cm 305 cm 350 cm 3500 cm 1 Accept any unambiguous indication of the correct answer.

0845/02 Primary Checkpoint Mathematics - Mark Scheme October 2018 Page 3 of 10 Question Answer Marks Further Information 7 Indicates graph C together with an explanation that the scale on the vertical axis is as long as possible, making it easier to see the difference between the children’s heights. 1 Do not accept C without an explanation. Do not accept any facts that are true of all the graphs e.g. Yuri is the biggest. Do not accept just C is more accurate/reliable. Accept explanations relating to: • C has bigger differences. • C is more clearly seen. • It has a larger scale. • Do not accept graph C is more accurate, but do accept anything implying graph C can be used/read more accurately. 8 16 apples are put into bags of 5 How many full bags are there? A minibus holds 10 people. 56 people are going on a trip. How many minibuses are needed? A pumpkin costs $3 How many can you buy with $10? 35 candles are put into 4 boxes How many boxes are needed to hold them all?round up round down Division question Rounding decision 2 All 4 answers correct. 3 answers correct. B1

0845/02 Primary Checkpoint Mathematics - Mark Scheme October 2018 Page 4 of 10 Question Answer Marks Further Information 9 1 The diagram must be sufficiently accurate for the intention to be clear (vertices within 1 mm). 10 10 (beads) 2 6 and 8 seen or 24 – ( their 6) and ( their 8) or 14 or 125 oe or 127 oe B1 A correct method containing any number of arithmetic errors: 24 – ( 31 of 24) – ( 41 of 24) M1

0845/02 Primary Checkpoint Mathematics - Mark Scheme October 2018 Page 5 of 10 Question Answer Marks Further Information 11(a) 1 11(b) 1 12 87 × 21 or 21 × 87 1 13 0 0 1 2 3 4 5 6 7 8y 12345678x 9 9 1 The diagram must be sufficiently accurate for the intention to be clear. Allow diagram showing an intermediate position, e.g. 0 0 1 2 3 4 5 6 7 8y 12345678x 9 9 19 61 15

0845/02 Primary Checkpoint Mathematics - Mark Scheme October 2018 Page 6 of 10 Question Answer Marks Further Information 14(a) 40 (cm) 1 14(b) 1 0 10 20 30 40 50 60 70 2345 Graph to show the growth of a maple tree Time (years) Height (cm) 1 Point plotted at 67 cm for 5 th year. Allow point between 66 cm and 68 cm exclusive. 15 4.5 1 Accept 4 21

0845/02 Primary Checkpoint Mathematics - Mark Scheme October 2018 Page 7 of 10 Question Answer Marks Further Information 16 26 + 54 = 100 – 20 7 × 9 < 8 × 8 56 ÷ 7 > 76 – 69 1 All answers must be correct for the award of the mark. 17 An example such as: 18 is a multiple of 3 but it is even 1 Accept sight of any even multiple of 3 Allow explanation that includes the repeat addition of 3 18 A correct number in each cell: Less than 50 More than 50 Less than 100 Divisible by 4 A multiple of 4 less than 50 e.g. 16 A multiple of 4 between 50 and 100 e.g. 64 Divisible by 25 25 75 2 Allow more than 1 correct answer in the top two cells. Any 2 or 3 correct answers B1

0845/02 Primary Checkpoint Mathematics - Mark Scheme October 2018 Page 8 of 10 Question Answer Marks Further Information 19 3.2 5.5 1.3 4.1 3.4 2.5 2.7 10 6.2 2 4 correct answers. 2 or 3 correct answers. B1 20 I II III IV V VI VII VIII IX X XI XII XIII XIV XV XVI XVII XVIII XIX XX XXI XXII XXIII XXIV XXV XXVI XXVII XXVIII XXIX XXX 2 All 6 numbers correct. Missing numbers are: XV XVII XX XXVI XXVIII XXIX 3 or more numbers correct. B1

0845/02 Primary Checkpoint Mathematics - Mark Scheme October 2018 Page 9 of 10 Question Answer Marks Further Information 21 4 20 = 25 5 24 = 120 51 1 Both parts must be correct for the award of the mark. 22 10 000 0 1 Accept an arrow between 7.3 cm and 7.5 cm from 0 23(a) 34 1 23(b) 35 1 24(a) 22 (°C) 1 Do not accept –22 (°C) 24(b) –20 (°C) 1 Do not accept 20– (°C) 25(a) 27 (cm²) 1 25(b) 42 (cm) 1 26 0.4 and 52 1 Accept any unambiguous indication of the correct answer.

0845/02 Primary Checkpoint Mathematics - Mark Scheme October 2018 Page 10 of 10 Question Answer Marks Further Information 27 the distance from Buenos Aires to Rosario the area of a tennis court the length of a pencilcentimetres metres kilometres 2 cm 2 m2 km 1 All three lines must be correct for 1 mark. 28(a) 9 (hours) 1 28(b) 13:35 or 1:35 pm 1 Do not accept just 1:35