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Number Series Worksheet

Logical reasoning lesson 1: Number series · Set 278 · 40 questions
TalentJR

How to think it through (Find the jump): Write the jump between each pair of neighbours (+3, +3, +3 … or × 2, × 2 …). If the jumps are not equal, look at the jumps themselves: do they grow by 1, take turns, or are the numbers squares (1, 4, 9, 16 …)? Use the same rule once more to get the next number.

NameDateTime takenScore ___ / 40
  1. 1.What comes next? 3, 7, 5, 9, 7, 11, ?
  2. 2.What comes next? 12, 18, 15, 21, 18, 24, ?
  3. 3.What comes next? 4, 12, 36, 108, 324, ?
  4. 4.What comes next? 3, 6, 12, 24, 48, ?
  5. 5.What comes next? 3, 5, 8, 12, 17, ?
  6. 6.What comes next? 1, 4, 9, 16, 25, ?
  7. 7.What comes next? 5, 6, 8, 11, 15, ?
  8. 8.What comes next? 11, 12, 14, 17, 21, ?
  9. 9.What comes next? 12, 18, 24, 30, 36, ?
  10. 10.What comes next? 3, 8, 15, 24, 35, ?
  11. 11.What comes next? 5, 14, 23, 32, 41, ?
  12. 12.What comes next? 24, 35, 48, 63, 80, ?
  13. 13.What comes next? 1, 2, 4, 8, 16, ?
  14. 14.What comes next? 17, 23, 29, 35, 41, ?
  15. 15.What comes next? 2, 6, 4, 8, 6, 10, ?
  16. 16.What comes next? 15, 16, 18, 21, 25, ?
  17. 17.What comes next? 9, 13, 18, 24, 31, ?
  18. 18.What comes next? 14, 21, 17, 24, 20, 27, ?
  19. 19.What comes next? 25, 36, 49, 64, 81, ?
  20. 20.What comes next? 7, 9, 12, 16, 21, ?
  21. 21.What comes next? 11, 17, 23, 29, 35, ?
  22. 22.What comes next? 37, 50, 65, 82, 101, ?
  23. 23.What comes next? 13, 15, 18, 22, 27, ?
  24. 24.What comes next? 1, 4, 2, 5, 3, 6, ?
  25. 25.What comes next? 12, 15, 13, 16, 14, 17, ?
  26. 26.What comes next? 15, 24, 35, 48, 63, ?
  27. 27.What comes next? 10, 13, 16, 19, 22, ?
  28. 28.What comes next? 9, 16, 25, 36, 49, ?
  29. 29.What comes next? 11, 13, 16, 20, 25, ?
  30. 30.What comes next? 3, 10, 9, 16, 15, 22, ?
  31. 31.What comes next? 16, 22, 20, 26, 24, 30, ?
  32. 32.What comes next? 5, 15, 45, 135, 405, ?
  33. 33.What comes next? 9, 14, 12, 17, 15, 20, ?
  34. 34.What comes next? 1, 4, 7, 10, 13, ?
  35. 35.What comes next? 11, 15, 13, 17, 15, 19, ?
  36. 36.What comes next? 5, 7, 10, 14, 19, ?
  37. 37.What comes next? 12, 21, 30, 39, 48, ?
  38. 38.What comes next? 7, 15, 23, 31, 39, ?
  39. 39.What comes next? 11, 18, 16, 23, 21, 28, ?
  40. 40.What comes next? 5, 10, 20, 40, 80, ?

Answer key

  1. 9
  2. 21
  3. 972
  4. 96
  5. 23
  6. 36
  7. 20
  8. 26
  9. 42
  10. 48
  11. 50
  12. 99
  13. 32
  14. 47
  15. 8
  16. 30
  17. 39
  18. 23
  19. 100
  20. 27
  21. 41
  22. 122
  23. 33
  24. 4
  25. 15
  26. 80
  27. 25
  28. 64
  29. 31
  30. 21
  31. 28
  32. 1215
  33. 18
  34. 16
  35. 17
  36. 25
  37. 57
  38. 47
  39. 26
  40. 160

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