HUNTERTUTORING

Practice Problems — Set 9

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2.OA.C.3 · Determine whether a group of objects (up to 20) has an odd or even nu…

Print and write your answers. Use diagrams to show thinking.

Warm-up

1. 6 + 6 = ___ 2. 12 − 6 = ___ 3. 30 − 5 = ___

_See printable PDF for diagram._

Written practice

1. 5 + 5 = ___ 2. Story: 10 stickers, give away 5. Left? ___ 3. 29 − 4 = ___ 4. Word problem: 29 marbles, lose 4. How many left? ___ 5. Story: 5 apples and 5 more. Total? ___ 6. Story: 10 stickers, give away 5. Left? ___ 7. 4 + 5 = ___ 8. Story: 5 birds, 5 fly away. How many remain? ___

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More written practice

1. 32 − 3 = ___ 2. Story: 5 apples and 5 more arrive. Total? ___ 3. Story: 4 apples and 5 more. Total? ___ 4. Story: 9 stickers, give away 5. Left? ___ 5. 7 + 5 = ___ 6. 12 − 5 = ___

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Patterns and rules

1. 6 + 7 = ___ 2. 13 − 7 = ___ 3. 46 − 5 = ___

_See printable PDF for diagram._

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Parent tip: Draw number bonds or number lines

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