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Ratio & proportionPuzzle

Code breaker:Ratio and a missing amount

Thirteen pairs of equivalent ratios with one number missing, ending with a three part ratio. The Code Box includes the answers you get by adding the same amount to both sides instead of multiplying. Two per A4.

A free key stage 3 and GCSE ratio and proportion puzzle with answers, spec code R7. It goes with the lessons on ratio: finding a missing amount and ratio: finding a missing amount.

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