Question P6 Forming and simplifying ratios
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Reduce 18 : 24 to its simplest form.
Answer
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Forming and simplifying ratios
Keep the quantities in order and divide both by the same number.
In this one. Divide both terms by the same number. Using their greatest common factor gives the simplest equivalent ratio.
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.
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.
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