AP Aussie Primary Academy

USA · Grade 1 · Maths

Adding Within 100

A ready-to-use printable worksheet for focused practice in adding within 100.

Free printable PDFGrade 1Maths
Adding Within 100 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.

Browse more Grade 1 worksheets

Adding Within 100

When adding two numbers within 100, place value helps you work accurately. Separate tens and ones when useful, then combine the parts.

Try This Strategy

  1. Partition each number into tens and ones.
  2. Add the ones and check whether they make another ten.
  3. Add the tens.
  4. Combine the totals and estimate to check the answer.

Quick Self-Check

Use a different method, such as a number line or compensation, to see whether your answer matches.