Download [PDF] October 2017 CAIE P2 Mark Schemes 0845 Mathematics Cambridge Primary Checkpoint

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This document consists of 11 printed pages and 1 blank page. IB17 10_0845_02/4RP © UCLES 2017 [Turn over Cambridge International Examinations Cambridge Primary Checkpoint MATHEMATICS 0845/02 Paper 2 October 2017 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 a 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.

0845/02 Primary Checkpoint Mathematics – Mark Scheme Published October 2017 Page 2 of 12 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 Published October 2017 Page 3 of 12 Question Answer Marks Further Information 1 1 Question Answer Marks Further Information 2(a) 186 or 31 1Accept fractions written in words. Accept equivalent fractions. 2(b) 189 or 6 3 or 21 1Accept fractions written in words. Accept equivalent fractions. Question Answer Marks Further Information 3 Card 2 – any number greater than 4990 and smaller than 5010 and Card 4 – any number greater than 5010 and smaller than 5060 1Both boxes must be correct for the award of the mark. Allow decimal numbers in the correct range. 0 1000 350

0845/02 Primary Checkpoint Mathematics – Mark Scheme Published October 2017 Page 4 of 12 Question Answer Marks Further Information 4 B < D < C < A 2 Allow 50° 75° 90° 110° ( G 2) Angles in the correct order but with consistent misinterpretation of < i.e. A < C < D < B B1 Question Answer Marks Further Information 5(a) Pineapples: 7 Melons: 14 1Both must be correct for the award of the mark. 5(b) 4.5 (cm) 1 Question Answer Marks Further Information 6 1st 6th5th 4th 3rd 2nd 1 Question Answer Marks Further Information 7 5 3 2 × 8 1 Question Answer Marks Further Information 8 28.6 2 Sight of 34.1 and 5.5 B1

0845/02 Primary Checkpoint Mathematics – Mark Scheme Published October 2017 Page 5 of 12 Question Answer Marks Further Information 9 ($) 0.39 1 Question Answer Marks Further Information 10(a) 600 (ml) 1 10(b) 825 (g) 1 Question Answer Marks Further Information 11 1All four must be correct for the award of the mark. 7.8 8.5 7.49 8.377 8 9

0845/02 Primary Checkpoint Mathematics – Mark Scheme Published October 2017 Page 6 of 12 Question Answer Marks Further Information 12 48 (years) or 104 (years) 2 A correct method involving multiples of 8 plus 1 or multiples of 7 minus 1, for example: M1 Do not accept a list of multiples without evidence of 1, 1 as appropriate. Question Answer Marks Further Information 13 1All three must be correct for the award of the mark. ... 24      32     40     48      56 ... 25      33     41     49      57 ... 21      28     35     42      49 ... 20      27     34     41      48or Anastasia takes a red sweet Anastasia takes a green sweet Anastasia takes a yellow sweet impossible even chance certain likely unlikely

0845/02 Primary Checkpoint Mathematics – Mark Scheme Published October 2017 Page 7 of 12 Question Answer Marks Further Information 14 120 (°) 1 Question Answer Marks Further Information 15 16 (students) 1 Question Answer Marks Further Information 16 2All three numbers must be correct. Allow Do not allow Two correct numbers. B1 337 5 1 8 2 24 337 5 1 8 2 24 3137 5 1 8 2 25 61

0845/02 Primary Checkpoint Mathematics – Mark Scheme Published October 2017 Page 8 of 12 Question Answer Marks Further Information 17 Explanation that 15 has factors other than 1 and 15, for example:  3 (or 5) is a factor of 15  3  5 = 15  3 (and / or 5) divides into 15 1Do not award the mark for explanations that only define prime numbers with no reference to 15. Do not award the mark for explanations which only state that 15 can be divided by other numbers. Answers must state factors other than 1 and 15, e.g.: “15 can be divided by 3 and 5” oe. Question Answer Marks Further Information 18(a) 4.8 (cm) 1Accept 4.7 to 4.9 inclusive (cm) 18(b) 73 (mm) 1Accept 72 to 74 inclusive (mm) Question Answer Marks Further Information 19 41.78 or 81.74 1 Question Answer Marks Further Information 20 ($)16.74 1

0845/02 Primary Checkpoint Mathematics – Mark Scheme Published October 2017 Page 9 of 12 Question Answer Marks Further Information 21 2All three signs must be correct for two marks. Two signs correct. B1 Question Answer Marks Further Information 22 12 21 12.5 21 41 21.25 42 54 42.8 2All four answers must be correct for two marks. Accept equivalent fractions. Three correct answers. B1 209.5 + 8.29 + 94.03 51.97 × 6 998.3 ÷ 6.7 1001 – (549.4 + 302.67) 70.75 × (3.93 + 1.37) 900 ÷ 2.4 = > <

0845/02 Primary Checkpoint Mathematics – Mark Scheme Published October 2017 Page 10 of 12 Question Answer Marks Further Information 23(a) 1 23(b) (0, 1) or (1, –1) 1Accept follow through from part (a). Note that (b) must be a whole number co-ordinate which lies on the line drawn in part (a). Question Answer Marks Further Information 24 Any three numbers which total 10 2Numbers may be repeated. Evidence that the total of the five numbers is 20, for example:  sight of 5 × 4 or 4 × 5  sight of 5 numbers totalling 20 within a trial and improvement method B1 −3 −2 −1 1 2 3 −3 −2 −1 1 0 23

0845/02 Primary Checkpoint Mathematics – Mark Scheme Published October 2017 Page 11 of 12 Question Answer Marks Further Information 25 50 (cm 2) 2 A complete method: (8 × 4) + (3 × their 6) or (3 × 10) + (their 5 × 4) or (8 × 10) – (their 5 × their 6) Arithmetic evidence of their 6 as 10 – 4 = wrong answer or Arithmetic evidence of their 5 as 8 – 3 = wrong answer must be shown. M1 Method can contain any number of arithmetic errors, but must be a correct method. Do not allow (3 × 10) + (8 × 4) = 62 (cm 2) Question Answer Marks Further Information 26 135 1 Question Answer Marks Further Information 27 Triangular pyramid or Tetrahedron 1Do not accept triangular prism or pyramid.

0845/02 Primary Checkpoint Mathematics – Mark Scheme Published October 2017 Page 12 of 12 BLANK PAGE