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Number Analogy Worksheet

Logical reasoning lesson 4: Number analogies · Set 103 · 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. 2 : 8 :: 3 : 27 :: 5 : ?
  2. 2.Find the rule, then the missing number. 2 : 8 :: 4 : 64 :: 3 : ?
  3. 3.Find the rule, then the missing number. 2 : 5 :: 4 : 17 :: 5 : ?
  4. 4.Find the rule, then the missing number. 7 : 48 :: 8 : 63 :: 3 : ?
  5. 5.Find the rule, then the missing number. 2 : 16 :: 4 : 18 :: 5 : ?
  6. 6.Find the rule, then the missing number. 9 : 20 :: 3 : 14 :: 4 : ?
  7. 7.Find the rule, then the missing number. 3 : 8 :: 5 : 24 :: 2 : ?
  8. 8.Find the rule, then the missing number. 7 : 48 :: 8 : 63 :: 6 : ?
  9. 9.Find the rule, then the missing number. 8 : 63 :: 4 : 15 :: 3 : ?
  10. 10.Find the rule, then the missing number. 4 : 17 :: 5 : 26 :: 8 : ?
  11. 11.Find the rule, then the missing number. 7 : 15 :: 5 : 11 :: 4 : ?
  12. 12.Find the rule, then the missing number. 7 : 15 :: 4 : 9 :: 6 : ?
  13. 13.Find the rule, then the missing number. 5 : 125 :: 4 : 64 :: 2 : ?
  14. 14.Find the rule, then the missing number. 8 : 65 :: 7 : 50 :: 2 : ?
  15. 15.Find the rule, then the missing number. 8 : 17 :: 3 : 7 :: 6 : ?
  16. 16.Find the rule, then the missing number. 4 : 20 :: 8 : 40 :: 2 : ?
  17. 17.Find the rule, then the missing number. 9 : 90 :: 2 : 6 :: 8 : ?
  18. 18.Find the rule, then the missing number. 6 : 13 :: 2 : 5 :: 5 : ?
  19. 19.Find the rule, then the missing number. 3 : 21 :: 4 : 28 :: 5 : ?
  20. 20.Find the rule, then the missing number. 3 : 9 :: 6 : 36 :: 5 : ?
  21. 21.Find the rule, then the missing number. 2 : 8 :: 4 : 64 :: 5 : ?
  22. 22.Find the rule, then the missing number. 5 : 24 :: 8 : 63 :: 9 : ?
  23. 23.Find the rule, then the missing number. 8 : 14 :: 6 : 12 :: 4 : ?
  24. 24.Find the rule, then the missing number. 5 : 26 :: 8 : 65 :: 9 : ?
  25. 25.Find the rule, then the missing number. 9 : 90 :: 7 : 56 :: 2 : ?
  26. 26.Find the rule, then the missing number. 5 : 45 :: 9 : 81 :: 8 : ?
  27. 27.Find the rule, then the missing number. 3 : 7 :: 2 : 5 :: 8 : ?
  28. 28.Find the rule, then the missing number. 4 : 20 :: 3 : 12 :: 5 : ?
  29. 29.Find the rule, then the missing number. 6 : 42 :: 8 : 72 :: 4 : ?
  30. 30.Find the rule, then the missing number. 3 : 21 :: 8 : 56 :: 7 : ?
  31. 31.Find the rule, then the missing number. 3 : 8 :: 8 : 63 :: 7 : ?
  32. 32.Find the rule, then the missing number. 7 : 15 :: 4 : 9 :: 8 : ?
  33. 33.Find the rule, then the missing number. 3 : 27 :: 2 : 8 :: 5 : ?
  34. 34.Find the rule, then the missing number. 9 : 21 :: 7 : 19 :: 8 : ?
  35. 35.Find the rule, then the missing number. 3 : 27 :: 5 : 125 :: 2 : ?
  36. 36.Find the rule, then the missing number. 6 : 15 :: 2 : 11 :: 5 : ?
  37. 37.Find the rule, then the missing number. 3 : 7 :: 6 : 13 :: 7 : ?
  38. 38.Find the rule, then the missing number. 4 : 9 :: 7 : 15 :: 5 : ?
  39. 39.Find the rule, then the missing number. 9 : 90 :: 2 : 6 :: 6 : ?
  40. 40.Find the rule, then the missing number. 5 : 30 :: 9 : 90 :: 7 : ?

Answer key

  1. 125
  2. 27
  3. 26
  4. 8
  5. 19
  6. 15
  7. 3
  8. 35
  9. 8
  10. 65
  11. 9
  12. 13
  13. 8
  14. 5
  15. 13
  16. 10
  17. 72
  18. 11
  19. 35
  20. 25
  21. 125
  22. 80
  23. 10
  24. 82
  25. 6
  26. 72
  27. 17
  28. 30
  29. 20
  30. 49
  31. 48
  32. 17
  33. 125
  34. 20
  35. 8
  36. 14
  37. 15
  38. 11
  39. 42
  40. 56

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