Worksheet

Order of Operations Error Detective

Grade 5 - Math - On Level

NameDate

  1. Order detective: evaluate 8 + 4 x 2 correctly.

  2. A student changed 9 + 9 x 8 into (9 + 9) x 8 = 144. What is the first mistake?

    • adding before multiplying
    • multiplying before adding
    • copying the numbers
    • using too many factors

  3. Order detective: evaluate 3 + 3 x 2 correctly.

  4. A student changed 6 + 8 x 9 into (6 + 8) x 9 = 126. What is the first mistake?

    • multiplying before adding
    • adding before multiplying
    • copying the numbers
    • using too many factors

  5. Order detective: evaluate 3 + 6 x 8 correctly.

  6. A student changed 3 + 7 x 2 into (3 + 7) x 2 = 20. What is the first mistake?

    • copying the numbers
    • multiplying before adding
    • adding before multiplying
    • using too many factors

  7. Order detective: evaluate 4 + 8 x 5 correctly.

  8. A student changed 3 + 8 x 4 into (3 + 8) x 4 = 44. What is the first mistake?

    • using too many factors
    • multiplying before adding
    • copying the numbers
    • adding before multiplying

  9. Order detective: evaluate 7 + 4 x 9 correctly.

  10. A student changed 3 + 6 x 6 into (3 + 6) x 6 = 54. What is the first mistake?

    • using too many factors
    • adding before multiplying
    • copying the numbers
    • multiplying before adding
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