HUNTERTUTORING

Practice Problems — Set 20

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1.OA.B.4 · Understand subtraction as an unknown-addend problem

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

Warm-up

1. 4 + 4 = ___ 2. 8 − 4 = ___ 3. 36 − 4 = ___

_See printable PDF for diagram._

Written practice

1. Create your own word problem for 1.OA.B.4. 2. Story: 3 apples and 6 more arrive. Total? ___ 3. Story: 9 stickers, give away 6. Left? ___ 4. Word problem: 35 marbles, lose 3. How many left? ___ 5. Story: 3 apples and 6 more. Total? ___ 6. Story: 9 stickers, give away 6. Left? ___ 7. Story: 3 birds, 6 fly away. How many remain? ___ 8. Two-step: Start with 9, add 3, then subtract 3. Result? ___

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More written practice

1. 38 − 6 = ___ 2. Fill in: 8 + ___ = 13 3. Story: 6 apples and 6 more. Total? ___ 4. Story: 12 stickers, give away 6. Left? ___ 5. 5 + 6 = ___ 6. 11 − 6 = ___

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Patterns and rules

1. 4 + 5 = ___ 2. 9 − 5 = ___ 3. 52 − 4 = ___

_See printable PDF for diagram._

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Stretch

1. Create your own word problem for 1.OA.B.4. 2. Story: 3 apples and 6 more arrive. Total? ___

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Parent tip: Draw number bonds or number lines

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All practice problemsBack to 1.OA.B.4