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Number Analogy Worksheet

Logical reasoning lesson 4: Number analogies · Set 25 · 40 questions
TalentJR

How to think it through (Same rule, both pairs): Look at the first pair and guess a rule: × something, + something, square it, square it and add or take away 1, cube it … Test the rule on the second pair. If it fails, try another rule. Use the rule that fits both pairs on the last number.

NameDateTime takenScore ___ / 40
  1. 1.Find the rule, then the missing number. 8 : 17 :: 7 : 15 :: 3 : ?
  2. 2.Find the rule, then the missing number. 3 : 9 :: 7 : 49 :: 6 : ?
  3. 3.Find the rule, then the missing number. 9 : 80 :: 8 : 63 :: 6 : ?
  4. 4.Find the rule, then the missing number. 9 : 80 :: 4 : 15 :: 7 : ?
  5. 5.Find the rule, then the missing number. 9 : 82 :: 7 : 50 :: 3 : ?
  6. 6.Find the rule, then the missing number. 8 : 64 :: 7 : 49 :: 2 : ?
  7. 7.Find the rule, then the missing number. 5 : 11 :: 7 : 13 :: 9 : ?
  8. 8.Find the rule, then the missing number. 4 : 15 :: 2 : 3 :: 5 : ?
  9. 9.Find the rule, then the missing number. 2 : 10 :: 8 : 40 :: 3 : ?
  10. 10.Find the rule, then the missing number. 2 : 8 :: 5 : 125 :: 3 : ?
  11. 11.Find the rule, then the missing number. 5 : 25 :: 4 : 16 :: 8 : ?
  12. 12.Find the rule, then the missing number. 2 : 4 :: 4 : 16 :: 3 : ?
  13. 13.Find the rule, then the missing number. 9 : 45 :: 5 : 25 :: 8 : ?
  14. 14.Find the rule, then the missing number. 5 : 125 :: 4 : 64 :: 3 : ?
  15. 15.Find the rule, then the missing number. 2 : 5 :: 3 : 10 :: 9 : ?
  16. 16.Find the rule, then the missing number. 4 : 20 :: 5 : 30 :: 9 : ?
  17. 17.Find the rule, then the missing number. 6 : 10 :: 8 : 12 :: 3 : ?
  18. 18.Find the rule, then the missing number. 2 : 4 :: 6 : 36 :: 8 : ?
  19. 19.Find the rule, then the missing number. 3 : 9 :: 4 : 16 :: 6 : ?
  20. 20.Find the rule, then the missing number. 4 : 17 :: 5 : 26 :: 7 : ?
  21. 21.Find the rule, then the missing number. 2 : 4 :: 9 : 81 :: 3 : ?
  22. 22.Find the rule, then the missing number. 7 : 16 :: 5 : 14 :: 9 : ?
  23. 23.Find the rule, then the missing number. 5 : 30 :: 3 : 12 :: 2 : ?
  24. 24.Find the rule, then the missing number. 2 : 4 :: 6 : 36 :: 4 : ?
  25. 25.Find the rule, then the missing number. 9 : 82 :: 3 : 10 :: 5 : ?
  26. 26.Find the rule, then the missing number. 5 : 125 :: 2 : 8 :: 3 : ?
  27. 27.Find the rule, then the missing number. 8 : 23 :: 5 : 20 :: 6 : ?
  28. 28.Find the rule, then the missing number. 6 : 13 :: 3 : 7 :: 8 : ?
  29. 29.Find the rule, then the missing number. 7 : 50 :: 3 : 10 :: 9 : ?
  30. 30.Find the rule, then the missing number. 7 : 56 :: 8 : 72 :: 2 : ?
  31. 31.Find the rule, then the missing number. 3 : 7 :: 6 : 13 :: 4 : ?
  32. 32.Find the rule, then the missing number. 4 : 64 :: 5 : 125 :: 3 : ?
  33. 33.Find the rule, then the missing number. 4 : 16 :: 5 : 20 :: 2 : ?
  34. 34.Find the rule, then the missing number. 5 : 10 :: 3 : 8 :: 8 : ?
  35. 35.Find the rule, then the missing number. 4 : 17 :: 9 : 82 :: 5 : ?
  36. 36.Find the rule, then the missing number. 2 : 5 :: 4 : 17 :: 9 : ?
  37. 37.Find the rule, then the missing number. 4 : 64 :: 2 : 8 :: 5 : ?
  38. 38.Find the rule, then the missing number. 8 : 16 :: 5 : 13 :: 2 : ?
  39. 39.Find the rule, then the missing number. 5 : 125 :: 2 : 8 :: 4 : ?
  40. 40.Find the rule, then the missing number. 5 : 11 :: 7 : 15 :: 6 : ?

Answer key

  1. 7
  2. 36
  3. 35
  4. 48
  5. 10
  6. 4
  7. 15
  8. 24
  9. 15
  10. 27
  11. 64
  12. 9
  13. 40
  14. 27
  15. 82
  16. 90
  17. 7
  18. 64
  19. 36
  20. 50
  21. 9
  22. 18
  23. 6
  24. 16
  25. 26
  26. 27
  27. 21
  28. 17
  29. 82
  30. 6
  31. 9
  32. 27
  33. 8
  34. 13
  35. 26
  36. 82
  37. 125
  38. 10
  39. 64
  40. 13

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