Cambridge International Examinations Cambridge Secondary 1 ...

Cambridge International Examinations

Cambridge Secondary 1 Checkpoint

1112/01

MATHEMATICS

Paper 1

October 2015

MARK SCHEME

Maximum Mark: 50

IMPORTANT NOTICE

Mark Schemes have been issued on the basis of one copy per Assistant examiner and two copies per Team

Leader.

This document consists of 11 printed pages and 1 blank page.

IB15 10_1112_01/4RP

? UCLES 2015

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2

Question number

1

Part

Mark

(a)

1

16 41 or 4.41 pm

(b)

1

19 min(utes)

Answer

Further Information

Total

2

Question number

2

Part

Mark

(a)

1

53 and 59 in either order

(b)

1

A correct reason

e.g.

? 3 goes into 51

? 17 is a factor of 51

? 3 ¡Á17

? 51 can be divided by 3

Answer

Further Information

Total

2

Question number

3

Part

Mark

(a)

1

All points plotted correctly

(b)

1

(¨C 4,¨C2) or (¨C 4,6)

Total

? UCLES 2015

Answer

Further Information

2

1112/01/O/N/15

Allow follow through

from part (a) provided

this results in a

parallelogram.

3

Question number

4

Part

Mark

Answer

2

Total

2

Question number

5

Part

Mark

2

Total

2

Question number

6

Part

Mark

(a)

1

(b)

1

Total

? UCLES 2015

Further Information

3

5

7

20

1

3

35

100

35

10

1

35

Award 1 mark for

¡ñ 1 correct answer

with none incorrect

¡ñ 2 correct answers

with at most one

incorrect

Answer

Further Information

Draws a correct triangle within the

constraints of the overlay.

Award 1 mark for

angle between 32-36¡ã

or

Award 1 mark for line

between 7.0 and 7.4

cm

Answer

Further Information

130.2

8

17

20

or 8

34

85

or 8

40

100

2

1112/01/O/N/15

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4

Question number

7

Part

Mark

1

Answer

Further Information

Completes the table correctly.

sleep school travel

Total

1

Question number

8

Part

Mark

2

eat

play

12

5

1

2

4

180¡ã

75¡ã

15¡ã

30¡ã

60¡ã

Answer

Further Information

0.07

0.7 ¡Á 10

Award 1 mark for at

least two correct.

0.7

70 ¡Á 0.01

7

7 ¡Â 0.01

70

7 ¡Â 0.1

Total

2

Question number

9

Part

Mark

(a)

1

19

(b)

1

28

Total

? UCLES 2015

700

Answer

Further Information

2

1112/01/O/N/15

5

Question number

10

Part

Mark

1

Answer

5

12

Total

1

Question number

11

Part

Mark

2

Further Information

or equivalent fraction

Answer

Further Information

m

Award 1 mark for any

2 correct.

m3

m2

mm

Total

2

Question number

12

Part

Mark

(a)

1

Answer

x ?

x

7

Further Information

(or equivalent)

and

x ? 2x + 1 (or equivalent)

(b)

Total

? UCLES 2015

1

Add 3 and then multiply by 4

An equivalent answer

is Multiply by 4 and

then add 12

2

1112/01/O/N/15

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