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Number Analogy Worksheet

Logical reasoning lesson 4: Number analogies · Set 13 · 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. 3 : 15 :: 4 : 16 :: 6 : ?
  2. 2.Find the rule, then the missing number. 4 : 16 :: 6 : 36 :: 9 : ?
  3. 3.Find the rule, then the missing number. 3 : 18 :: 8 : 48 :: 4 : ?
  4. 4.Find the rule, then the missing number. 3 : 12 :: 2 : 6 :: 7 : ?
  5. 5.Find the rule, then the missing number. 5 : 26 :: 8 : 65 :: 3 : ?
  6. 6.Find the rule, then the missing number. 3 : 27 :: 2 : 8 :: 4 : ?
  7. 7.Find the rule, then the missing number. 8 : 23 :: 3 : 18 :: 5 : ?
  8. 8.Find the rule, then the missing number. 8 : 40 :: 4 : 20 :: 9 : ?
  9. 9.Find the rule, then the missing number. 5 : 125 :: 3 : 27 :: 2 : ?
  10. 10.Find the rule, then the missing number. 3 : 27 :: 4 : 64 :: 5 : ?
  11. 11.Find the rule, then the missing number. 7 : 48 :: 6 : 35 :: 3 : ?
  12. 12.Find the rule, then the missing number. 9 : 19 :: 8 : 17 :: 4 : ?
  13. 13.Find the rule, then the missing number. 8 : 17 :: 9 : 19 :: 6 : ?
  14. 14.Find the rule, then the missing number. 6 : 18 :: 9 : 27 :: 2 : ?
  15. 15.Find the rule, then the missing number. 8 : 17 :: 4 : 9 :: 2 : ?
  16. 16.Find the rule, then the missing number. 3 : 10 :: 7 : 50 :: 6 : ?
  17. 17.Find the rule, then the missing number. 6 : 37 :: 4 : 17 :: 2 : ?
  18. 18.Find the rule, then the missing number. 6 : 10 :: 7 : 11 :: 4 : ?
  19. 19.Find the rule, then the missing number. 2 : 8 :: 3 : 27 :: 4 : ?
  20. 20.Find the rule, then the missing number. 2 : 8 :: 5 : 125 :: 4 : ?
  21. 21.Find the rule, then the missing number. 6 : 13 :: 8 : 17 :: 5 : ?
  22. 22.Find the rule, then the missing number. 7 : 56 :: 5 : 30 :: 9 : ?
  23. 23.Find the rule, then the missing number. 5 : 8 :: 9 : 12 :: 3 : ?
  24. 24.Find the rule, then the missing number. 7 : 49 :: 8 : 64 :: 6 : ?
  25. 25.Find the rule, then the missing number. 4 : 64 :: 5 : 125 :: 3 : ?
  26. 26.Find the rule, then the missing number. 3 : 8 :: 2 : 3 :: 9 : ?
  27. 27.Find the rule, then the missing number. 5 : 125 :: 4 : 64 :: 2 : ?
  28. 28.Find the rule, then the missing number. 3 : 27 :: 4 : 64 :: 2 : ?
  29. 29.Find the rule, then the missing number. 2 : 6 :: 5 : 30 :: 4 : ?
  30. 30.Find the rule, then the missing number. 6 : 42 :: 4 : 20 :: 2 : ?
  31. 31.Find the rule, then the missing number. 4 : 64 :: 3 : 27 :: 5 : ?
  32. 32.Find the rule, then the missing number. 9 : 19 :: 4 : 9 :: 7 : ?
  33. 33.Find the rule, then the missing number. 5 : 125 :: 2 : 8 :: 3 : ?
  34. 34.Find the rule, then the missing number. 3 : 8 :: 6 : 35 :: 4 : ?
  35. 35.Find the rule, then the missing number. 4 : 17 :: 3 : 10 :: 6 : ?
  36. 36.Find the rule, then the missing number. 3 : 12 :: 4 : 20 :: 2 : ?
  37. 37.Find the rule, then the missing number. 4 : 36 :: 2 : 18 :: 9 : ?
  38. 38.Find the rule, then the missing number. 9 : 90 :: 7 : 56 :: 3 : ?
  39. 39.Find the rule, then the missing number. 2 : 12 :: 8 : 48 :: 6 : ?
  40. 40.Find the rule, then the missing number. 3 : 8 :: 7 : 48 :: 2 : ?

Answer key

  1. 18
  2. 81
  3. 24
  4. 56
  5. 10
  6. 64
  7. 20
  8. 45
  9. 8
  10. 125
  11. 8
  12. 9
  13. 13
  14. 6
  15. 5
  16. 37
  17. 5
  18. 8
  19. 64
  20. 64
  21. 11
  22. 90
  23. 6
  24. 36
  25. 27
  26. 80
  27. 8
  28. 8
  29. 20
  30. 6
  31. 125
  32. 15
  33. 27
  34. 15
  35. 37
  36. 6
  37. 81
  38. 12
  39. 36
  40. 3

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