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5th grade · Math · Unit 10 of 14

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.

Washington State Learning Standards learning standard: M.5.R.OA.1; M.5.R.OA.2 · evaluating numerical expressions with parentheses, brackets or braces, and writing and interpreting simple 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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