Review — Difficulty 4/10
1.OA.B.4 · Understand subtraction as an unknown-addend problem
Review skills for this standard. Write answers where shown.
Together with a parent
1. 6 + 5 = ___ 2. 11 − 5 = ___ 3. 22 − 6 = ___
Written review
1. 4 + 4 = ___ 2. Story: 8 stickers, give away 4. Left? ___ 3. 24 − 4 = ___ 4. Word problem: 24 marbles, lose 4. How many left? ___ 5. Story: 4 apples and 4 more. Total? ___ 6. Story: 8 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
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