Year 1 | One More and One Less to 20 Worksheets

Year 1 one more and one less to 20 worksheets

These Year 1 one more and one less to 20 worksheets help pupils practise finding the number that is one more or one less than a given number up to 20. Each worksheet displays colourful base-10 blocks with tens and ones to support pupils’ understanding of number values.

Pupils write the number that is one less and one more than the number shown, using clear visuals and straightforward instructions. The tasks are designed to reinforce early place value, number sequencing, and counting skills.

These ready-to-use PDFs are perfect for whole-class teaching, small groups, or independent practice, providing an effective resource that aligns with White Rose small steps and supports early number sense development.

Find more White Rose aligned, time-saving maths resources in our Year 1 maths worksheets collection to support a full Year 1 curriculum.