Review — Difficulty 10/10

1.OA.B.3 · Apply properties of operations as strategies to add and subtract

Review skills for this standard. Write answers where shown.

Together with a parent

1. Discuss: Apply properties of operations as strategies to add and subtract.2 Examples: If … 2. What was easy? What was tricky? 3. Use the diagram to model one example.

Written review

1. 6 + 4 = ___ 2. 10 − 4 = ___ 3. 30 − 6 = ___ 4. Fill in: 6 + ___ = 10 5. Story: 6 apples and 4 more. Total? ___ 6. Story: 10 stickers, give away 4. Left? ___

_See printable PDF for diagram._

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Skills checklist

• [ ] Adds and subtracts accurately in range
• [ ] Uses a model or strategy
• [ ] Checks answers when possible
• [ ] Explains Apply properties of operations as strategies to add and subtract without prompts

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