Practice Problems — Set 15

1.OA.A.1 · Use addition and subtraction within 20 to solve word problems involvi…

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

Warm-up

1. Two-step: 3 red and 5 blue marbles, then lose 2. How many now? ___ 2. Compare: Team A 36 points, Team B 31. Difference? ___ 3. Draw a bar model for: 3 + 5 + 3

_See printable PDF for diagram._

Written practice

1. Two-step: 6 red and 4 blue marbles, then lose 1. How many now? ___ 2. Compare: Team A 35 points, Team B 30. Difference? ___ 3. Draw a bar model for: 6 + 4 + 4 4. Word problem: 6 stickers plus 4 more. Total? ___ 5. Does your answer make sense? Explain in one sentence. 6. Create a two-step word problem for 1.OA.A.1. 7. Two-step: 5 red and 4 blue marbles, then lose 1. How many now? ___ 8. Compare: Team A 38 points, Team B 33. Difference? ___

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More written practice

1. Draw a bar model for: 5 + 4 + 3 2. Two-step: 4 red and 4 blue marbles, then lose 1. How many now? ___ 3. Compare: Team A 41 points, Team B 36. Difference? ___ 4. Draw a bar model for: 4 + 4 + 4 5. Two-step: 3 red and 4 blue marbles, then lose 1. How many now? ___ 6. Compare: Team A 44 points, Team B 39. Difference? ___

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Patterns and rules

1. Two-step: 3 red and 6 blue marbles, then lose 3. How many now? ___ 2. Compare: Team A 52 points, Team B 47. Difference? ___ 3. Draw a bar model for: 3 + 6 + 3

_See printable PDF for diagram._

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Parent tip: Underline the question and key numbers