Worksheet

Order of Operations Error Detective

Grade 5 - Math - Challenge Me

NameDate

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

  2. A student changed 12 + 5 x 6 into (12 + 5) x 6 = 102. What is the first mistake?

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

  3. Order detective: evaluate 5 + 9 x 9 correctly.

  4. A student changed 7 + 3 x 11 into (7 + 3) x 11 = 110. What is the first mistake?

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

  5. Order detective: evaluate 6 + 9 x 8 correctly.

  6. A student changed 2 + 7 x 2 into (2 + 7) x 2 = 18. What is the first mistake?

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

  7. Order detective: evaluate 6 + 10 x 8 correctly.

  8. A student changed 9 + 11 x 6 into (9 + 11) x 6 = 120. What is the first mistake?

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

  9. Order detective: evaluate 8 + 10 x 7 correctly.

  10. A student changed 7 + 12 x 5 into (7 + 12) x 5 = 95. What is the first mistake?

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