AP Aussie Primary Academy

Australia · Year 1 · Maths

Addition Within 20

A ready-to-use printable worksheet for focused practice in addition within 20.

Free printable PDFYear 1Maths
Addition Within 20 worksheet preview

About this worksheet

This printable resource focuses on one clear learning skill so students can practise independently or with adult support.

Learning focus

Use the worksheet for targeted practice, revision, homework, tutoring or homeschool learning. Review student responses and revisit the skill where needed.

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Addition Within 20

For addition within 20, children can use counting on, known number facts, ten frames or making 10. The goal is to choose a method that is accurate and becomes increasingly efficient.

Try This Strategy

  1. Start with the larger number.
  2. Count on the smaller number, or look for a way to make 10.
  3. Use a known fact to check the result.
  4. Say the number sentence aloud.

Quick Self-Check

Try solving the same calculation in two ways and compare the methods.