Practice Problems — Set 18

5.OA.A.1 · Use parentheses, brackets, or braces in numerical expressions, and ev…

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

Warm-up

1. 10 + 9 = ___ 2. 19 − 9 = ___ 3. Draw a picture for 10 + 9. Write the equation.

_See printable PDF for diagram._

Written practice

1. Story: 9 birds land on a branch. 8 more join. How many now? ___ 2. Story: 17 cookies on a plate. Eat 8. How many left? ___ 3. Two-step: 9 red and 8 blue marbles, then lose 1. How many now? ___ 4. Story: 9 birds and 8 more land. How many now? ___ 5. Story: 17 cookies, eat 8. How many left? ___ 6. Word problem: 9 stickers plus 8 more. Total? ___ 7. Draw a bar model for: 9 + 8 + 3 8. Create a two-step word problem for 5.OA.A.1.

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More written practice

1. Draw a picture for 8 + 8. Write the equation. 2. Story: 8 birds and 8 more land. How many now? ___ 3. Story: 16 cookies, eat 8. How many left? ___ 4. 7 + 8 = ___ 5. 15 − 8 = ___ 6. Draw a picture for 7 + 8. Write the equation.

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Patterns and rules

1. 10 + 10 = ___ 2. 20 − 10 = ___ 3. Draw a picture for 10 + 10. Write the equation.

_See printable PDF for diagram._

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Stretch

1. Story: 9 birds land on a branch. 8 more join. How many now? ___ 2. Story: 17 cookies on a plate. Eat 8. How many left? ___

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Parent tip: Act out story problems with objects