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Writing a Ratio as a Fraction or Linear Function

Writing a Ratio as a Fraction or Linear Function

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Genie and Baby Genie

Lesson

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9 minute activity

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Horizontal ratio bar for Mia and Noah sharing £45 in the ratio 4:5, split into 9 equal parts with 4 parts for Mia and 5 for Noah

A ratio compares quantities by counting equal parts. In a ratio like 4:54:54:5, the first quantity has 444 parts and the second has 555 parts, so there are 999 parts altogether.

To turn one part of a ratio into a fraction of the whole, put that part over the total number of parts. So the fractions are 49\frac{4}{9}94​ and 59\frac{5}{9}95​.

Questions

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60 exam-style questions

Practice questions

Question 1

2 marks

In a bag there are blue sweets and red sweets. The ratio of blue sweets to red sweets is 5:3

What fraction of the sweets are blue?

Flashcards

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19 flashcards

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If Sam and Tia share money in the ratio 3:2, what fraction of the total does Tia receive?

Writing a Ratio as a Fraction or Linear Function Revision Guide

  1. GCSE
  2. /Maths
  3. /Writing a Ratio as a Fraction or Linear Function

Revision notes for CCEA GCSE Maths Writing a Ratio as a Fraction or Linear Function: explanations and worked examples.

Practise questions

1 of 5

Paint is mixed in the ratio red:blue =7:3=7:3=7:3. What fraction of the mixture is blue paint?