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Understanding Multiplication: math test solutions, Grade 3 – download the PDF

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Test solutions Grade 3 : Understanding Multiplication — Zyro the alien explorer of Planète Maths

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.

1 Repeated addition and products / 4 pts

  1. \( 6 \times 4 = 24 \) (1 pt)
  2. \( 3 \times 9 = 27 \) (1 pt)
  3. \( 2 \times 8 = 16 \) (1 pt)
  4. \( 5 \times 6 = 30 \) (1 pt)

2 Reading an array / 4 pts

  1. \( 5 \times 4 = 20 \). There are 20 flowers. (1 pt)
  2. \( 5 \times 4 = 20 \) and \( 4 \times 5 = 20 \). (2 pts)
  3. The box is 8, by the commutative property. (1 pt)

3 Skip counting / 3 pts

  1. 3, 6, 9, 12, 15, 18, 21 inches. (2 pts)
  2. \( 7 \times 3 = 21 \). The snail climbs 21 inches. (1 pt)

4 Zeros and ones / 3 pts

  1. \( 12 \times 0 = 0 \) (1 pt)
  2. \( 1 \times 15 = 15 \) (1 pt)
  3. \( 0 \times 1 = 0 \) (1 pt)

5 Bookshelves / 4 pts

  1. \( 6 \times 7 = 42 \). There are 42 books. (2 pts)
  2. Now there are 7 shelves: \( 7 \times 7 = 49 \). She has 49 books. (2 pts)

6 True or false / 2 pts

  1. True: factors can switch places and both products are 24. (1 pt)
  2. False: any number times 0 is 0, so \( 5 \times 0 = 0 \). (1 pt)
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