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. Discuss: Fluently add and subtract within 20 using mental strategies.2 By end of Grade 2,… 2. What was easy? What was tricky? 3. Use the diagram to model one example.
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._
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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
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