Worksheet set 20

Addition and subtraction within 10

Use counters or fingers when needed.

Warm-up

1. Draw a picture for 1 + 2.

Written practice

1. 1 + 2 = ___ 2. 2 + 1 = ___ 3. 4 − 1 = ___ 4. 2 + 2 = ___ 5. 5 − 2 = ___ 6. 1 + ___ = 4 7. Write two ways to make 4.

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More practice

1. 1 + 2 = ___ 2. 2 + 1 = ___ 3. 4 − 1 = ___ 4. 2 + 2 = ___ 5. 5 − 2 = ___ 6. 1 + ___ = 4 7. Write two ways to make 4.

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Patterns and rules

1. Adding makes the total bigger. 2. Subtracting makes the total smaller.

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