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ReasoningAges 7–9English

Number and logic riddles

Short reasoning puzzles using clues about odd, even and two-digit numbers. Explain each clue step by step.

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  1. I am an even number between 11 and 15 that is not 12. What number am I?
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    14

  2. Add 5 to me and you get 18. What number am I?
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    13

  3. I have 3 tens and 7 ones. What number am I?
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    37

  4. Double me is 16. What number am I?
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    8

  5. I am greater than 25, less than 30, and end in 8. What number am I?
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    28

  6. Start at 20, subtract 4, then add 2. What number do you reach?
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    18