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Primary 6 Mathematics · Order of operations

Name: ______________________

Date: ____________

  1. 1. What is 6 + 4 × 2?

    • ☐ (a) 20
    • ☐ (b) 14
    • ☐ (c) 12
    • ☐ (d) 16

  2. 2. What is (6 + 4) × 2?

    • ☐ (a) 20
    • ☐ (b) 14
    • ☐ (c) 12
    • ☐ (d) 16

  3. 3. What is 18 − 6 ÷ 3?

    • ☐ (a) 4
    • ☐ (b) 16
    • ☐ (c) 12
    • ☐ (d) 18

  4. 4. Which of these is equal to 30?

    • ☐ (a) (2 + 4) × 5
    • ☐ (b) 2 + 4 × 5
    • ☐ (c) 2 + (4 × 5)
    • ☐ (d) 2 × 4 + 5

  5. 5. Evaluate 24 ÷ 4 + 2 × 3.

  6. 6. Evaluate 50 − (12 + 8) × 2.

  7. 7. Find the unknown value: 3 × ? + 4 = 25.

  8. 8. Evaluate 40 ÷ 8 × 2.

Answer sheet

  1. 1. 14 — Multiply first: 4 × 2 = 8. Then 6 + 8 = 14.
  2. 2. 20 — Brackets first: 6 + 4 = 10. Then 10 × 2 = 20.
  3. 3. 16 — Divide first: 6 ÷ 3 = 2. Then 18 − 2 = 16.
  4. 4. (2 + 4) × 5 — (2 + 4) × 5 = 6 × 5 = 30. The others equal 22, 22 and 13.
  5. 5. 12 — Do the division and multiplication first: 24 ÷ 4 = 6 and 2 × 3 = 6. Then 6 + 6 = 12.
  6. 6. 10 — Brackets first: 12 + 8 = 20. Then multiply: 20 × 2 = 40. Finally 50 − 40 = 10.
  7. 7. 7 — Undo the + 4: 25 − 4 = 21. Undo the × 3: 21 ÷ 3 = 7. Check: 3 × 7 + 4 = 21 + 4 = 25.
  8. 8. 10 — Division and multiplication have equal priority, so work from left to right: 40 ÷ 8 = 5, then 5 × 2 = 10.

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