Year 1 Subtraction Within 20 Worksheets

These Year 1 subtraction within 20 worksheets help children build confidence with taking away from larger numbers. Subtraction within 20 is an important KS1 maths skill because it develops counting backwards, number facts, mental strategies and the link between addition and subtraction.

Children can use these worksheets to practise subtraction number sentences, missing number subtraction, simple take-away questions and problems involving numbers up to 20. The printable format makes them useful for home learning, classroom practice or extra revision.

Subtraction within 20 helps children move beyond simple take-away questions and begin to use more efficient strategies. Children may count back, use known number facts, or think about the related addition fact to solve each question.

Parents can use these worksheets to help children practise subtraction little and often. After completing a worksheet, children can explain whether they counted back, used objects or used a known fact to find the answer.

Teachers can use subtraction within 20 worksheets for fluency practice, revision, independent work or small-group support. Once children are confident with this topic, they can move on to mixed addition and subtraction, missing number questions and simple word problems.