Review — Difficulty 7/10

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. 6 + 6 = ___ 2. 12 − 6 = ___ 3. 5 − 2 = ___

Written review

1. 4 + 5 = ___ 2. 9 − 4 = ___ 3. 5 − 0 = ___ 4. 2 + 1 = ___ 5. Fill in: 4 + ___ = 5 6. Without counting from 1, solve: 3 + 1 = ___

_See printable PDF for diagram._

___________________________ ___________________________ ___________________________ ___________________________ ___________________________

Skills checklist

• [ ] Solves facts with strategies or recall
• [ ] Explains one strategy used
• [ ] Accuracy improves over the 20 sets
• [ ] Explains Fluently add and subtract within 20 using mental strategies without prompts

___________________________ ___________________________ ___________________________ ___________________________