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Number Series Worksheet

Logical reasoning lesson 1: Number series · Set 269 · 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? 18, 20, 22, 24, 26, ?
  2. 2.What comes next? 9, 18, 12, 21, 15, 24, ?
  3. 3.What comes next? 12, 19, 26, 33, 40, ?
  4. 4.What comes next? 9, 16, 25, 36, 49, ?
  5. 5.What comes next? 4, 6, 9, 13, 18, ?
  6. 6.What comes next? 10, 15, 20, 25, 30, ?
  7. 7.What comes next? 3, 8, 7, 12, 11, 16, ?
  8. 8.What comes next? 9, 12, 16, 21, 27, ?
  9. 9.What comes next? 18, 22, 26, 30, 34, ?
  10. 10.What comes next? 1, 3, 9, 27, 81, ?
  11. 11.What comes next? 1, 4, 9, 16, 25, ?
  12. 12.What comes next? 18, 26, 20, 28, 22, 30, ?
  13. 13.What comes next? 9, 18, 27, 36, 45, ?
  14. 14.What comes next? 3, 6, 9, 12, 15, ?
  15. 15.What comes next? 36, 49, 64, 81, 100, ?
  16. 16.What comes next? 11, 13, 15, 17, 19, ?
  17. 17.What comes next? 5, 15, 45, 135, 405, ?
  18. 18.What comes next? 6, 10, 8, 12, 10, 14, ?
  19. 19.What comes next? 25, 36, 49, 64, 81, ?
  20. 20.What comes next? 4, 7, 6, 9, 8, 11, ?
  21. 21.What comes next? 9, 11, 14, 18, 23, ?
  22. 22.What comes next? 5, 10, 20, 40, 80, ?
  23. 23.What comes next? 24, 35, 48, 63, 80, ?
  24. 24.What comes next? 13, 16, 19, 22, 25, ?
  25. 25.What comes next? 8, 12, 10, 14, 12, 16, ?
  26. 26.What comes next? 9, 13, 18, 24, 31, ?
  27. 27.What comes next? 4, 8, 16, 32, 64, ?
  28. 28.What comes next? 12, 17, 22, 27, 32, ?
  29. 29.What comes next? 2, 6, 18, 54, 162, ?
  30. 30.What comes next? 11, 15, 20, 26, 33, ?
  31. 31.What comes next? 4, 12, 36, 108, 324, ?
  32. 32.What comes next? 4, 13, 22, 31, 40, ?
  33. 33.What comes next? 1, 9, 17, 25, 33, ?
  34. 34.What comes next? 13, 17, 22, 28, 35, ?
  35. 35.What comes next? 13, 15, 18, 22, 27, ?
  36. 36.What comes next? 12, 13, 15, 18, 22, ?
  37. 37.What comes next? 1, 2, 4, 8, 16, ?
  38. 38.What comes next? 3, 9, 27, 81, 243, ?
  39. 39.What comes next? 13, 14, 16, 19, 23, ?
  40. 40.What comes next? 19, 28, 37, 46, 55, ?

Answer key

  1. 28
  2. 18
  3. 47
  4. 64
  5. 24
  6. 35
  7. 15
  8. 34
  9. 38
  10. 243
  11. 36
  12. 24
  13. 54
  14. 18
  15. 121
  16. 21
  17. 1215
  18. 12
  19. 100
  20. 10
  21. 29
  22. 160
  23. 99
  24. 28
  25. 14
  26. 39
  27. 128
  28. 37
  29. 486
  30. 41
  31. 972
  32. 49
  33. 41
  34. 43
  35. 33
  36. 27
  37. 32
  38. 729
  39. 28
  40. 64

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