[PDF] Cambridge Secondary Checkpoint - Math (1112) Specimen 2012 Paper 1 MS.pdf | Plain Text

This document consists of 5 printed pages and 1 blank page. © UCLES 2011 [Turn over UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge Checkpoint MATHEMATICS 1112/01 Paper 1 For Examination from 2012 SPECIMEN MARK SCHEME 1 hour MAXIMUM MARK: 50

2 © UCLES 2011 1112/01/SM/12 Question 1 Part Mark Answer Further Information (a) (i) 1 4.837 (ii) 1 0.927 (iii) 1 15060 (b) (i) 1 276.52 (ii) 1 280 Total 5 Question 2 Part Mark Answer Further Information (a) 1 6 5 3 (b) 1 12 (c) (i) 1 = (ii) 1 < Total 4 Question 3 Part Mark Answer Further Information (a) 1 148.5 (b) 2 1.79 1 mark for 1.78 or 1.785… as answer (c) 2 0.77 1 mark for 3.73 or 2.85 or 2.42 seen in working Total 5

3 © UCLES 2011 1112/01/SM/12 [Turn over Question 4 Part Mark Answer Further Information (a) (i) 1 115(°) (ii) 1 73(°) (b) 2 42(°) corresponding angles OR TQ is parallel to SR 1 mark each Total 4 Question 5 Part Mark Answer Further Information (a) (i) 1 5.4 (ii) 1 2.456 (b) (i) 1 752180 (ii) 1 1.315 (c) 1 reason explaining that multiplication by a number between 0 and 1 gives answer less than starting number Allow ‘it should be less than 342.’ Do not allow ‘it should be less.’ Total 5

4 © UCLES 2011 1112/01/SM/12 Question 6 Part Mark Answer Further Information (a) 2 Correct tally marks 150 < h ≤ 155 / 1 155 < h ≤ 160 //// 5 160 < h ≤ 165 //// / 6 165 < h ≤ 170 // 2 170 < h ≤ 175 // 2 1, 5, 6, 2, 2 correct in frequency column 1 mark each Frequencies follow through their tallies. (b) 2 Crosses correctly positioned [follow through]. Crosses joined with ruled line. 1 mark each Total 4 Question 7 Part Mark Answer Further Information (a) (i)1 25.84 (metres) (ii)1 5600 (kilograms) (b) 1 140 – 180 (kilometres) Accept any answer in given range (c) 2 200 (millilitres) 1 mark for answer 0.2 or for 1600(ml) seen in working Total 5 Question 8 Part Mark Answer Further Information (a) 1 6a (b) 1 b (2b – 5) Or (2b – 5)b (c) (i)1 3 (ii)2 0.5 [OE] 1 mark for 2 as answer or 5x + 3x = 4 seen or implied Total 5

5 © UCLES 2011 1112/01/SM/12 Question 9 Part Mark Answer Further Information (a) 1 Table completed correctly x –1 0 2 4 y 10 8 4 0 Both correct = 1 mark (b) 2 correct line drawn 1 mark for 3 points plotted correctly, follow through their table (c) 2 line passing through (1, 2) and (3, 8) drawn 1 for any line through (1, 2) or any line with gradient 3 Total 5 Question 10 Part Mark Answer Further Information (a) 1 True indicated Reason: no sector for 6 In each part accept an equivalent reason In each part both the answer and the reason must be given (b) 1 ‘Not enough information’ indicated Reason: number of people not shown on chart (c) 1 False indicated, mode is 4. Total 3 Question 11 Part Mark Answer Further Information (a) (i) 1 3, 6 Both correct, accept reversed order (ii) 1 30, 60 Both correct, accept reversed order (b) (i) 1 5 (ii) 1 16 (iii) 1 1 Total 5

6 © UCLES 2011 1112/01/SM/12 BLANK PAGE