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5th grade · Math · Unit 10 of 15

Parentheses & Expressions

Brackets first!

What your child practices

Evaluating expressions with parentheses and brackets, writing an expression from words, and reading an expression without calculating it.

California Content Standards learning standard: 5.OA.1; 5.OA.2 · writing and evaluating numerical expressions with parentheses, and interpreting expressions

How we explain it

Children can open this short lesson before they practice.

  1. Do what is inside parentheses ( ) first, then brackets [ ].
  2. Then multiply and divide, left to right.
  3. Then add and subtract, left to right.

Example: What is 3 × [2 + (4 × 5)]? 4 × 5 = 20. 2 + 20 = 22. 3 × 22 = 66. Answer: 66

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    Where do the parentheses go to make 4 + 2 × 6 = 36?

    • 4 + (2 × 6)
    • (4 + 2) × 6
    • 4 + 2 × 6 (no parentheses)

  2. Question 2

    Which expression means “add 7 and 3, then multiply by 4”?

    • (4 + 7) × 3
    • 4 × (7 + 3)
    • 4 × 7 + 3
    • 7 + 3 × 4

  3. Question 3

    Without calculating: 3 × (2664 + 327) is how many times as large as 2664 + 327?

    • 4
    • 2664
    • 327
    • 3

  4. Question 4

    What is (4 + 9) × 3?

    (4 + 9) × 3 = ?

    • 31
    • 40
    • 39
    • 42
    • 41

  5. Question 5

    What is 2 × [5 + (4 × 1)]?

    • 20
    • 17
    • 18
    • 14
    • 21

  6. Question 6

    Without calculating: 4 × (3193 + 686) is how many times as large as 3193 + 686?

    • 4
    • 5
    • 3193
    • 686

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