HUNTERTUTORING

Practice Problems — Set 17

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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. 5 + 4 = ___ 2. 9 − 4 = ___ 3. 33 − 5 = ___

_See printable PDF for diagram._

Written practice

1. Story: 4 birds, 6 fly away. How many remain? ___ 2. Two-step: Start with 10, add 4, then subtract 3. Result? ___ 3. Explain your thinking for this word problem in one sentence. 4. Create your own word problem for 1.OA.D.8. 5. Story: 4 apples and 6 more. Total? ___ 6. Story: 10 stickers, give away 6. Left? ___ 7. Story: 4 apples and 6 more arrive. Total? ___ 8. Story: 10 stickers, give away 6. Left? ___

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More written practice

1. 35 − 3 = ___ 2. Fill in: 8 + ___ = 10 3. Story: 3 apples and 6 more. Total? ___ 4. Story: 9 stickers, give away 6. Left? ___ 5. 6 + 6 = ___ 6. 12 − 6 = ___

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Patterns and rules

1. 5 + 5 = ___ 2. 10 − 5 = ___ 3. 49 − 5 = ___

_See printable PDF for diagram._

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Stretch

1. Story: 4 birds, 6 fly away. How many remain? ___ 2. Two-step: Start with 10, add 4, then subtract 3. Result? ___

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Parent tip: Draw number bonds or number lines

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