Download [PDF] April 2020 CAIE P1 Mark Schemes 0845 Mathematics Cambridge Primary Checkpoint

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[PDF] April 2020 CAIE P1 Mark Schemes 0845 Mathematics Cambridge Primary Checkpoint.pdf | Plain Text

This document has 12 pages. Blank pages ar e indicated. 05_0845_0 1 ©UCLES 2020 [Turn over Cambridge Primary Checkpoint MATHEMATICS 0845/01 Paper 1 April 2020 MARK SCHEME Maximum Mark: 40 Published This mark scheme is published as an aid to teachers and learners, to indicate the requirements of the examination. However, we have not b een able to adjust it to reflect the full range of answers that would have been seen as a part of the normal moderation and marking process, and it does not necessarily contain all the possible alternatives that might have arisen. Cambridge will not enter into discussions about the mark scheme.

0845/01 Primary Checkpoint Mathematics – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 2 of 12 General guidance on marking This section gives general guidelines on marking learner responses that are not specifically mentioned in the mark scheme. Any guidance specifically given in the mark scheme supersedes this guidance. Difference in printing It is suggested that schools check their printed copies for di fferences in printing that may affect the answers to the questions, for example in measurement questions. 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 Brackets in mark scheme When brackets appear in the mark sc heme this indicates extra information that is not required for the award of the mark(s). For example: A question requiring an answer in grams may have an answer line: grams The mark scheme will show the word ‘grams’ in brackets. Negative numbers The table shows acceptable and unacceptable versions of the answer –2. Accept Do not accept ?2 2?

0845/01 Primary Checkpoint Mathematics – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 3 of 12 Number and place value The table shows various general rules in terms of acceptable decimal answers. Accept Accept omission of leading zero if answer is clearly shown, e.g. .675 Accept tailing zeros, unless the question has asked for a specific number of decimal places, e.g. 0.7000 Accept a comma as a decimal point if that is the convention that you have taught the learners, e.g. 0,638 Units For questions involving quantities, e.g. length, mass, money, duration or time, correct units must be given in the answer . Units are provided on the answer line unless finding the units is part of what is being assessed. The table shows acceptable and unacceptable versions of the answer 1.85 m. Accept Do not accept If the unit is given on the answer line, e.g. ............................ m Correct conversions, provided the unit is stated unambiguousl y, e.g. ..... 185 cm...... m (this is unambiguous since the unit cm comes straight after the answer , voiding the m which is now not next to the answer) ......185...... m ......1850......m etc. If the question states the unit that the answer should be given in, e.g. ‘Give your answer in metres’ . 1.85 1 m 85 cm 18 5; 1850 ; Any conversions to other units, e.g. 185 cm

0845/01 Primary Checkpoint Mathematics – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 4 of 12 Money In addition to the rules for units, the table below gives guidance for answers involving money . The table shows acceptable and unacceptable versions of the answer $0.30. Accept Do not accept If the amount is in dollars and cents, the answer should be given to two decimal places $0.30 For an integer number of dollars it is acceptable not to give any decimal places, e.g. $9 or $9.00 $0.3 $09 or $09.00 If units are not given on the answer line Any unambiguous indication of the correct amount, e.g. 30 cents; 30 c $0.30; $0-30; $0=30; $00:30 30 or 0.30 without a unit $30; 0.30 cents Ambiguous answers, e.g. $30 cents; $0.30 c; $0.30 cents (as you do not know which unit applies because there ar e units either side of the number) If $ is shown on the answer line All unambiguous indications, e.g. $......0.30......; $......0-30......; $......0=30......; $......00:30...... $......30...... Ambiguous answers, e.g. $......30 cents......; $......0.30 cents...... unless units on the answer line have been deleted, e.g. $......30 cents...... If cents is shown on the answer line ......30......cents ......0.30......cents Ambiguous answers, e.g. ......$30 ......cents; ......$0.30 ......cents unless units on the answer line have been deleted, e.g. ......$0.30...... cents

0845/01 Primary Checkpoint Mathematics – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 5 of 12 Duration In addition to the rules for units, the table below gives guidance for answers involving time durations. The table shows acceptable and unacceptable versions of the answer 2 hours and 30 minutes. Accept Do not accept Any unambiguous indication using any reasonable abbreviations of hours (h, hr, hrs), minutes (m, min, mins) and seconds (s, sec, secs), e.g. 2 hours 30 minutes; 2 h 30 m; 02 h 30 m Any correct conversion with appr opriate units, e.g. 2.5 hours; 150 mins unless the question specifically asks for time given in hours and minutes Incorrect or ambiguous formats, e.g. 2.30; 2.3; 2.30 hours; 2.30 min; 2 h 3; 2.3 h (this is because this indicates 0.3 of an hour - i.e. 18 minutes - rather than 30 minutes) 02:30 (as this is a 24-hour clock time, not a time interval) 2.5; 150 T ime The table below gives guidance for answers involving time. It shows acceptable and unacceptable versions of the answer 07:30. Accept Do not accept If the answer is required in 24-hour format Any unambiguous indication of correct answer in numbers, words or a combination of the two, e.g. 07:30 with any separator in place of the colon, e.g. 07 30; 07,30; 07-30; 0730 7:30 7:30 am 7 h 30 m 7:3 7 30 7.30 pm 073 07.3 If the answer is required in 12-hour format Any unambiguous indication of correct answer in numbers, words or a combination of the two, e.g. 7:30 am with any separator in place of the colon, e.g. 7 30 am; 7.30 am; 7-30 am 7.30 in the morning Half past seven (o’clock) in the morning Accept am or a.m. Absence of am or pm 1930 am 7 h 30 m 7:3 730 7.30 pm

0845/01 Primary Checkpoint Mathematics – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 6 of 12 Question Answer Marks Further Information 1 250 ? 10 = 25  15 × 10 = 1500 x 90 ÷ 10 = 900 x 12 × 100 = 1200  2 Award 2 for all 4 correct . 3 correct B1 2(a) 3 = + 0 0 6 2 8 1 1 2(b) 5 = + 0 1 0 0 0 1 5 8 0 1 3 14:25 1 Accept 2:25 pm 4 396 (marbles) 1 5 5139 1 6(a) 5 (cm) and 3 (cm) 1 Accept 4.9 to 5.1 for 5 Accept 2.9 to 3.1 for  6(b) 16 (cm) 1 Accept correct FT from part (a)

0845/01 Primary Checkpoint Mathematics – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 7 of 12 Question Answer Marks Further Information 7 degrees 4 1 Accept ° Accept radians. Both answers must be correct for the mark. Accept recognisable misspellings. 8 14 (km) 1 9 1 Accept some in accuracy in lines provided intention is clear. Both answers must be correct for the mark. 10 1 Award 1 mark for all 3 lines correct. Allow mark if the positions on the number line are correctly labelled with 1 2, 0.9, 3 10 11 (3, 6) 1 Correct order only.

0845/01 Primary Checkpoint Mathematics – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 8 of 12 Question Answer Marks Further Information 12 Angelique circled and an explanation that 50% = 25 out of 50 or 60% = 30 out of 50 1 Both parts of the answer must be correct for the award of the mar k. 13(a) 25 (°C) 1 13(b) 1 L ast two points do not need to be joined for 1 mark .

0845/01 Primary Checkpoint Mathematics – Mark Scheme April 2020 PUBLISHED Page 9 of 12 Question Answer Marks Further Information 14 32 × 20 = 640 640 – 32 = 608 2 The working and answer must be shown for 2 marks. For correct working without the answe r. M1 Award only one of these. Answer only or correct answer using long multiplication. B1 Correct method containing arithmetic errors, for example: (32 ? 20) ? 32 = wrong answer. M1 15 24 (students) 1 16(a) 24 and 309 1 Both answers must be cor rect for 1 mark. Do not allow 10, 10, 4 or 100, 100, 100, 9 16(b) 1 Accept any arrangement of the correct symbols. 17 0 and 8 1 Both digits must be correct for the award of the mark. 18 115.18 1 19(a) 51 (c) 1 19(b) Hassan 1

0845/01 Primary Checkpoint Mathematics – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 10 of 12 Question Answer Marks Further Information 20 1 All 3 must be circled and no others for 1 mark. 21 8 24 12 2 Award 2 marks for all 3 correct. 2 correct B1 22 2 Correct 4 by 2 face. Accept any one of these answers. Correct 2 by 3 face. Accept any one of these answers. One face correct B1

0845/01 Primary Checkpoint Mathematics – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 11 of 12 Question Answer Marks Further Information 23 Any two from: 50 × 60 = 3000 or 60 × 50 = 3000 50 × 80 = 4000 or 80 × 50 = 4000 50 × 20 = 1000 or 20 × 50 = 1000 2 Condone correct 3 -digit by 2 -digit answers, e.g. 120 × 50 = 6000 one correct calculation B1 24 Calculation Decimal Mixed number 13 ÷ 2 6.5 62 1 32 ? 5 6.4 6 52 or 6 10 4 23 ? 4 5.75 5 4 3 2 Aw ard 2 marks for all 4 answers correct. B1 Award 1 mark for 2 or 3 answers correct. Accept equivalent mixed numbers, e.g. 5 100 75 25 1 The diagram must be sufficiently accurate for the intention to be clear.

0845/01 Primary Checkpoint Mathematics – Mark Scheme April 2020 PUBLISHED © UCLES 2020 Page 12 of 12 Question Answer Marks Further Information 26 0.5 (litres) 1 Allow half a litre or equivalent. Do not accept answers in ml. 27 Multiple of 8 Not a multiple of 8 Multiple of 6 72 42 Not a multiple of 6 32 52 62 2 Award 2 marks for 4 numbers correctly placed. B1 Award 1 mark for 3 numbers correctly placed. 28 102 mm, 10.4 cm, 0.12 m, 125 mm 1 Accept: 102 mm, 104 mm, 120 mm, 125 mm or equivalent. Accept answers without units.