CAMBRIDGE LOWER SECONDARY MATHEMATICS 8: END OF UNIT 12 TEST
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Stage 8 End of Unit 12 Test
1
Simplify these ratios.
a 6 : 12 : 30
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b 20 : 12 : 24
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c 8 weeks : 4 days
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d 6 cm : 5 mm : 0.4 m
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2 Giovanna is mixing paint.
She mixes 450 ml of yellow paint with 750 ml of blue paint and 1.8 litres
of white paint.
Circle the correct ratio of yellow : blue : white paint. Show your working.
45 : 75 : 18 3 : 5 : 12 9 : 15 : 32 1 : 1.5 : 4
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3 Simplify the ratio 4.2 : 0.6 : 1.8.
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4 Share $45 between Ani, Bo and Caz in the ratios 1 : 3 : 5 .
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Cambridge Lower Secondary Mathematics 8 – Byrd, Byrd & Pearce © Cambridge University Press 2021
CAMBRIDGE LOWER SECONDARY MATHEMATICS 8: END OF UNIT 12 TEST
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Cambridge Lower Secondary Mathematics 8 – Byrd, Byrd & Pearce © Cambridge University Press 2021
CAMBRIDGE LOWER SECONDARY MATHEMATICS 8: END OF UNIT 12 TEST
5
The angles in a triangle are in the ratio 2 : 5 : 8.
Work out the size of the angles.
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6
bag of nuts has brazil nuts and walnuts in the ratio 5 : 3.
Write down the fraction of the nuts that are
brazil nuts _______ b walnuts _______
7
The ratio of men to women in an orchestra is 7 : 5.
The number of adults in the orchestra is greater than 40 but less than
50.
How many adults are in the orchestra?
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8
Ana mixes a fruit drink using grape juice and apple juice in the ratio 3 : 7.
Beth mixes a fruit drink using grape juice and apple juice in the ratio 8 :
17.
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Cambridge Lower Secondary Mathematics 8 – Byrd, Byrd & Pearce © Cambridge University Press 2021
CAMBRIDGE LOWER SECONDARY MATHEMATICS 8: END OF UNIT 12 TEST
What fraction of each fruit drink is grape juice?
Ana’s fruit drink: ___________ Beth’s fruit drink: ___________
Whose fruit drink, Ana’s or Beth’s, has the higher proportion of grape
juice?
Show all your working. Justify your choice.
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[TOTAL: 20 Marks]
END OF TEST
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Cambridge Lower Secondary Mathematics 8 – Byrd, Byrd & Pearce © Cambridge University Press 2021
