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Question P6 Forming and simplifying ratios

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Red and blue beads — 24 and 32

There are 24 red beads and 32 blue beads. Write the ratio of red beads to blue beads.

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Answer

24 : 32 (equivalently 3 : 4)

About this method

Forming and simplifying ratios

Keep the quantities in order and divide both by the same number.

In this one. The order in the question matters: red first, blue second. Both quantities count beads, so they already use the same unit.

18 : 24 becomes 3 : 4first18; each box is 6second24; each box is 6

How to spot it

The question names two quantities in a stated order, red to blue, or gives an existing ratio to reduce. Words like 'ratio' and 'simplest form' give it away.

Common mistake

Children write the numbers in the order they appear in the story rather than the order the question asks for. When simplifying, they divide only one of the two numbers instead of both.

Practise a similar question

Standard There are 18 red beads and 24 blue beads. Write the ratio of red beads to blue beads.
All 4 with this pattern →
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