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Grade 4 · Reasoning

Grade 4 Reasoning: Number puzzles

Ontario · Reasoning — solve number puzzles

1.

Which number makes this true? 1 + __ = 2

2.

Which number makes this true? __ − 2 = 1

3.

Which number makes this true? 5 × __ = 15

4.

Which number makes this true? __ ÷ 3 = 5

5.

The columns follow the same rule. Which number completes the last column?

6.

Which number makes this true? 6 + __ = 7

7.

Which number makes this true? __ − 7 = 1

8.

Which number makes this true? __ ÷ 3 = 10

9.

The columns follow the same rule. Which number completes the last column?

10.

Which number makes this true? 11 + __ = 12

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Answer key

Grade 4 Reasoning: Number puzzles

Ontario · Reasoning — solve number puzzles

Question numbers match the worksheet.

  1. 1.B) 11 + 1 = 2.
  2. 2.B) 33 − 2 = 1.
  3. 3.D) 35 × 3 = 15.
  4. 4.D) 1515 ÷ 3 = 5.
  5. 5.A) 12Each bottom number is 2 times the number above it.
  6. 6.D) 16 + 1 = 7.
  7. 7.B) 88 − 7 = 1.
  8. 8.A) 3030 ÷ 3 = 10.
  9. 9.D) 14Each bottom number is 2 times the number above it.
  10. 10.D) 111 + 1 = 12.

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