Review — Difficulty 4/10

2.OA.B.2 · Fluently add and subtract within 20 using mental strategies

Review skills for this standard. Write answers where shown.

Together with a parent

1. 7 + 6 = ___ 2. 13 − 7 = ___ 3. 5 − 3 = ___

Written review

1. 5 + 5 = ___ 2. 10 − 5 = ___ 3. 5 − 1 = ___ 4. 2 + 2 = ___ 5. Fill in: 5 + ___ = 5 6. Without counting from 1, solve: 4 + 1 = ___

_See printable PDF for diagram._

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Skills checklist

• [ ] Solves facts with strategies or recall
• [ ] Explains one strategy used
• [ ] Accuracy improves over the 20 sets

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