Multiplication Facts and Properties: math test solutions, Grade 3

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Test solutions with the detailed point scale. Add up your points and spot what to review.

Suggested time: 45 minutes. Out of 20 points. Calculator allowed only when the problem says so.

Sommaire

a) 45. b) 28. c) 24. d) 36. e) 72. f) 18. g) 70. h) 49. (8 × 0.5 pt = 4 pts)

a) \(4 \times 3 = 12\), so 120. (1 pt) b) \(6 \times 2 = 12\), so 120. (1 pt) c) \(7 \times 5 = 35\), so 350. (1 pt)

a) \(7 \times 6 = 7 \times 5 + 7 \times 1 = 35 + 7 = 42\). (2 pts)

b) \(6 \times 9 = 6 \times 5 + 6 \times 4 = 30 + 24 = 54\). (2 pts)

a) \((3 \times 5) \times 2 = 15 \times 2 = 30\) and \(3 \times (5 \times 2) = 3 \times 10 = 30\). They are equal. (2 pts)

b) \((4 \times 5) \times 6 = 20 \times 6 = 120\). (1 pt)

a) The missing numbers are 36 and 54. (2 pts)

b) The two digits of each product add up to 9. (1 pt)

a) \(8 \times 6 = 48\) markers. (1 pt) b) \(4 \times 9 = 36\) crayons. (1 pt) c) \(48 + 36 = 84\). There are 84 markers and crayons in all. (1 pt)

Test yourself: quick challenge for Grade 3