Cambridge O Level - GCE Guide

*7890471656*

Cambridge O Level

MATHEMATICS (SYLLABUS D) Paper 1

You must answer on the question paper. You will need: Geometrical instruments

4024/12 October/November 2020

2 hours

INSTRUCTIONS Answer all questions. Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs. Write your name, centre number and candidate number in the boxes at the top of the page. Write your answer to each question in the space provided. Do not use an erasable pen or correction fluid. Do not write on any bar codes. Calculators must not be used in this paper. You may use tracing paper. You must show all necessary working clearly.

INFORMATION The total mark for this paper is 80. The number of marks for each question or part question is shown in brackets [ ].

DC (KN/CB) 188660/2 ? UCLES 2020

This document has 20 pages. Blank pages are indicated.

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ELECTRONIC CALCULATORS MUST NOT BE USED IN THIS PAPER

1

(a)

Evaluate

4 5

-

2 3

.

(b) Evaluate 2.7 # 0.2 .

................................................. [1]

................................................. [1]

2

Find the fraction which Give your answer in its

lies exactly halfway simplest form.

between

3 5

and

5 7

.

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................................................. [2]

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3 3 Factorise.

(a) 12t2 - 4t

(b) a (x - y) + b (y - x)

................................................. [1]

(c) x2 - 2x - 3

................................................. [1]

................................................. [1]

4 Write these lengths in order of size, starting with the smallest.

0.043 km

433 cm

4340 mm

4

1 3

m

..................................... , ..................................... , ..................................... , ....................................... [2] smallest

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4 5 Sandra buys a vase for $40 and sells it for $200.

Calculate her percentage profit.

............................................. % [2]

6 These are the minimum temperatures, in ?C, recorded by a weather station each day during one week.

? 2.3

? 4.6

? 1.2

? 0.7

? 1.4

? 2.4

? 3.5

(a) Find the range of these temperatures.

............................................. ?C [1] (b) How many of these temperatures are between ? 4?C and ? 2?C?

................................................. [1]

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5

7 By writing each number correct to 1 significant figure, estimate the value of

6.0442 212 # 0.304

.

................................................. [2]

8

12

11

1

10

2

9 8 7

3

4 5 6

In the diagram, the time on the clock is 2.30 pm. Calculate the reflex angle between the two hands of the clock.

NOT TO SCALE

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................................................. [2]

4024/12/O/N/20

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