HUNTERTUTORING

Practice Problems — Set 12

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1.OA.D.8 · Determine the unknown whole number in an addition or subtraction equa…

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

Warm-up

1. 4 + 5 = ___ 2. 9 − 5 = ___ 3. 28 − 4 = ___

_See printable PDF for diagram._

Written practice

1. Story: 3 apples and 4 more arrive. Total? ___ 2. 7 − 4 = ___ 3. Story: 7 stickers, give away 4. Left? ___ 4. Fill in: 6 + ___ = 12 5. Story: 3 apples and 4 more. Total? ___ 6. Story: 7 stickers, give away 4. Left? ___ 7. Word problem: 27 marbles, lose 3. How many left? ___ 8. 10 − 4 = ___

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More written practice

1. Story: 3 birds, 4 fly away. How many remain? ___ 2. Fill in: 6 + ___ = 10 3. Story: 6 apples and 4 more. Total? ___ 4. Story: 10 stickers, give away 4. Left? ___ 5. 5 + 4 = ___ 6. 9 − 4 = ___

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Patterns and rules

1. 4 + 6 = ___ 2. 10 − 6 = ___ 3. 44 − 4 = ___

_See printable PDF for diagram._

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Parent tip: Draw number bonds or number lines

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All practice problemsBack to 1.OA.D.8