Simplifying Ratios — Free KS3 Worksheet

A free, printable KS3 worksheet on simplifying ratios without a calculator, with a full worked answer key. 16 questions graded easy to hard for Years 7, 8 and 9, including three-part ratios, different units and word problems.

Practise simplifying ratios without a calculator. Divide every part by the highest common factor to write a ratio in its simplest form — and remember to make the units the same first. The questions build from simple two-part ratios up to three-part ratios, ratios with different units, and word problems, and every one comes with a full worked answer so you can mark it together.