Download [PDF] April 2017 CAIE P1 Mark Schemes 0845 Mathematics Cambridge Primary Checkpoint

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[PDF] April 2017 CAIE P1 Mark Schemes 0845 Mathematics Cambridge Primary Checkpoint.pdf | Plain Text

This document consists of 13 printed pages and 1 blank page. IB17 05_0845_01/5RP © UCLES 2017 [Turn over Cambridge International Examinations Cambridge Primary Checkpoint MATHEMATICS 0845/01 Paper 1 April 2017 MARK SCHEME Maximum Mark: 40 IMPORTANT NOTICE Mark Schemes have been issued on the basis of one copy per Assistant examiner and two copies per Team Leader. 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 Principal Examiner Report for Teachers. Cambridge will not enter into discussions about these mark schemes.

0845/01 Checkpoint Primary – Mark Scheme April 2017 Published Page 2 of 14 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

0845/01 Checkpoint Primary – Mark Scheme April 2017 Published Page 3 of 14 Question Answer Marks Further Information 1 50 1 Question Answer Marks Further Information 2 9 (km) 1 Question Answer Marks Further Information 3 (a) Multiples of three Even numbers 24 27302228 262023 25 29 21 1 Anywhere in the multiples of three ring, but not in the overlap area. 3 (b) 24 1

0845/01 Checkpoint Primary – Mark Scheme April 2017 Published Page 4 of 14 Question Answer Marks Further Information 4 (a) heptagon 1 Accept ‘irregular heptagon’. Accept ‘septagon’. 4 (b) Any trapezium with 1 line of symmetry made by connecting dots on the grid, e.g.: 1 Accept shape drawn in any orientation.

0845/01 Checkpoint Primary – Mark Scheme April 2017 Published Page 5 of 14 Question Answer Marks Further Information 5 7 (marbles) 2 A correct method containing any number of arithmetic errors: For example: (24 ÷ 2) – 5 or (24 – 10) ÷ 2 or 24 – (24 ÷ 2) – 5 M1 Question Answer Marks Further Information 6 1 21 or 1 4 2 or 1 84 (pizzas) 1 Accept any equivalent mixed number. Question Answer Marks Further Information 7 (a) Frequency 2 4 5 3 1 Ignore tally column. Mark is awarded for correct frequencies. Do not accept tallies on their own. 7 (b) Red 1

0845/01 Checkpoint Primary – Mark Scheme April 2017 Published Page 6 of 14 Question Answer Marks Further Information 8 (a) ($) 40 1 8 (b) July, August, September and October 1 All four answers must be given for the mark, with no extras. Accept abbreviations, e.g. J, A, S, O Question Answer Marks Further Information 9 4250 (m l) 1 Question Answer Marks Further Information 10 one-half of 40 one-third of 75 one-fifth of 200 50 45 40 35 30 25 20 2 One mark for each. One correct line. B1 Question Answer Marks Further Information 11 16, 36 and 49 1 All three numbers must be correct for the award of the mark.

0845/01 Checkpoint Primary – Mark Scheme April 2017 Published Page 7 of 14 Question Answer Marks Further Information 12 Any one of: 60 60 60 60 6 42 12 6 36 18 6 18 30 3024 12 2 Numbers can be in any order. Three different multiples of 6 or Three multiples of 6 that add to 60 but with one repeat e.g. 6 6 48 B1 Question Answer Marks Further Information 13 1.48 or 0.36 1 Do not allow 1 unit, 4 tenths and 8 hundredths or (0 units), 3 tenths and 6 hundredths.

0845/01 Checkpoint Primary – Mark Scheme April 2017 Published Page 8 of 14 Question Answer Marks Further Information 14 Impossible Unlikely The card has a letter T on it The card has a letter R on it The card has a capital letter on itEven chance Likely Certain 1 Both correct for 1 mark. Question Answer Marks Further Information 15 4 1 Accept 13 remainder 4. Do not accept fractions or decimals.

0845/01 Checkpoint Primary – Mark Scheme April 2017 Published Page 9 of 14 Question Answer Marks Further Information 17 (a) Explanation that shows that 784 must be multiplied by 10, for example 112 × 70 = 112 × 7 × 10 or 784 × 10 The answer, 7840, is not essential. 1 Do not allow 7840 without a correct explanation. Do not allow long multiplication 112 × 70 with no reference to 112 × 7 = 784. Do not accept ‘add zero’ or ‘move decimal’. 17 (b) Explanation that shows that 784 must be divided by 10, for example: 11.2 × 7 = 112 ÷ 10 × 7 or 784 ÷ 10 or 112 × 7 × 0.1 The answer, 78.4, is not essential. 1 Do not allow 78.4 without a correct explanation. Do not allow long multiplication 11.2 × 7 with no reference to 112 × 7 = 784. Do not accept ‘move decimal’. Question Answer Marks Further Information 16 mirror line 1 All four vertices must be correct. Drawing must be accurate enough to show clear intention.

0845/01 Checkpoint Primary – Mark Scheme April 2017 Published Page 10 of 14 Question Answer Marks Further Information 18 0.2 0.25 1 2 0.3 0.4 0.5 0.75 1 4 2 5 3 10 2 All 3 lines correct with no extra lines. Two answers correct and no more than 1 extra incorrect line. B1 Question Answer Marks Further Information 19 (a) 6.3 oe 1 19 (b) 0.76 oe 1

0845/01 Checkpoint Primary – Mark Scheme April 2017 Published Page 11 of 14 Question Answer Marks Further Information 20 (a) (– 4, –3) 1 Correct format only. 20 (b) –5 –4 –3 –2 –1 012345 1 2 3 4 5 –1 –2 –3 –4 –5 H I y x 6 –6 –66 7 J K 1 K is plotted at (– 4, –3). Accept follow through from part (a). Question Answer Marks Further Information 21 3.12 3.14 3.2 3.4 3.42 1 Do not accept reverse order. Question Answer Marks Further Information 22 140 1

0845/01 Checkpoint Primary – Mark Scheme April 2017 Published Page 12 of 14 Question Answer Marks Further Information 23 true true true false 1 All three must be correct for the award of the mark. Accept any clear indication. Question Answer Marks Further Information 24 1 3 11 33 1 All factors must be given for award of one mark. Allow in any order. Question Answer Marks Further Information 25 Each line should total 1.2 0.3 0.20.4 0.5 0.6 0.1 1 All three numbers must be correct for the award of the mark.

0845/01 Checkpoint Primary – Mark Scheme April 2017 Published Page 13 of 14 Question Answer Marks Further Information 26 2.69 and 3.58 1 Both must be correct for the mark. Question Answer Marks Further Information 27 62(°) 1 Accept answers between 61° and 63° inclusive. Question Answer Marks Further Information 28 116 (cm 2) 2 A correct method containing any number of arithmetic errors, e.g.: (12 × 3) + (20 × 4) or (7 × 12) + (4 × 8) or (20 × 7) – (8 × 3) M1

0845/01 Checkpoint Primary – Mark Scheme April 2017 Published Page 14 of 14 BLANK PAGE