Enlargement

Worksheet answers

Worksheet 1: Programme Questions

1. 364cm
2. 50m
3. 185
4. C
5. 3
6. Scale factor = new length/original length
7. one-eighteenth
8. The Statue of Liberty
9. Image is reduced in size and nearer the centre of enlargement
10. (0,2)

Worksheet 2: Tick or Trash

Question 1

Student A is correct. Student B has only doubled the size of the figure in one dimension.

Question 2

Student A is correct. Student B gave the enlargement that maps A onto B.

Worksheet 3: Exam Practice Questions (Edexcel)

This is a selection of past exam questions from Edexcel, targeted at the middle ability range. You can use the sequence as it stands or select individual questions to suit your needs.

Below is the mark scheme for each question, which may help you to see how marks are allocated and what the examiner is especially looking for. The mark schemes use the following abbreviations:

oe	or equivalent
cao	correct answer only
ft	follow-through marks
dep	dependent
indep	independent
M	method marks
A	accuracy marks
B	benefit-of-doubt mark
SC	special case

Question 1

(a) i) 5cm
ii) '5' x 20 = 100km
(b) i) 060º
ii) 180º + '60º' = 240º
(c) Plane plotted 4cm from mast
bearing of 220º

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Question 2

(a) 4 x 5 = 20cm²
(b) 12cm, 15cm
(c) 'bi' x 'bii' ÷ 'a' = 9

Notes:
(a) B1 cao for 20
B1 cao cm² (indep)
(b) B1 cao for 12
B1 cao for 15
(c) M1 for 'bi' x 'bii' ÷ 'a' or 3² or 1:9
A1 ft

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Question 3

(a) 125cm
(b) 40cm
(c) 140o
(d) 118.5cm

Notes:
(a) B1 cao
(b) B1 cao
(c) B1 cao
(d) B1 cao

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Question 4

8.2 x 50 000 ÷ 100 000 = 4.1km

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Question 5

(a) 0.9 ÷ 3 x 2 = 0.6m
(b) 28 ÷ 2 x 3 = 42cm

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Question 6

(a)	1
	3

(b)

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Question 7

(a) 9 x 1.5 = 13.5cm
(b) 6 ÷ 1.5 = 4cm
(c) 60º

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Question 8

Drawn enlargement

Notes:
B1 3 adjacent lines correctly enlarged
B2 cao (tolerance of ± 2mm)