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Mathematics · Grades K–1

Addition within ten

Count both groups without counting any item twice.

Make a worksheet

The key idea

Count both groups without counting any item twice.

part + part = whole

Worked examples

7 + 2 = ?

7 + 2 = 9

9

8 + 2 = ?

8 + 2 = 10

10

Try it yourself

  1. 4 + 1 = ?

  2. 8 + 0 = ?

Check your understanding

Answers and marking notes
  1. 5

    4 + 1 = 5

  2. 8

    8 + 0 = 8

Further reading and review references

These are reference links, not copied exercises, institutional endorsement or proof of independent review.

Learning preview · teacher review required. Grade bands are approximate, not official curriculum alignment.