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Stage 9 End of Unit 1: Answers

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Stage 9 End of Unit 1: Answers

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Sourabhi
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CAMBRIDGE LOWER SECONDARY MATHEMATICS 9: END OF UNIT 1 TEST ANSWERS

Stage 9 End of unit 1


The tests and mark schemes have been written by the authors. These may not fully reflect the approach of Cambridge Assessment International
Education.

Answers
1 27 and 2 ×7
(−1 mark for each error or omission) [2]

2 a The product is 10. This can be shown by using a calculator. [1]


b Any valid answer, e.g. 2 and 4 − 2 [1]

3 a 1 [1]
b 256 [1]
1
c or 0.0625 [1]
16

4 Any valid answers. For example:


a 2 [1]
b 90 [1]

5 a 6.32 ×106 [1]


b 1.29 × 10 −5 [1]

6 a 350 000 [1]


b y, z, x [1]

7 a True. 172 = 289 and 182 = 324 [1]


b False. 73 = 343 > 300
(A reason is required for the mark) [1]

8 a 25 [1]
b 20 [1]
c 2 −3 [1]

9 a 57 [1]
b 6 −2 [1]
[Total: 20 marks]

Cambridge Lower Secondary Mathematics 9 – Byrd, Byrd & Pearce © Cambridge University Press 2021 1

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