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Number Series Worksheet

Logical reasoning lesson 1: Number series · Set 25 · 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? 14, 17, 20, 23, 26, ?
  2. 2.What comes next? 5, 15, 45, 135, 405, ?
  3. 3.What comes next? 10, 14, 19, 25, 32, ?
  4. 4.What comes next? 4, 8, 16, 32, 64, ?
  5. 5.What comes next? 17, 26, 37, 50, 65, ?
  6. 6.What comes next? 13, 21, 18, 26, 23, 31, ?
  7. 7.What comes next? 15, 24, 16, 25, 17, 26, ?
  8. 8.What comes next? 7, 12, 17, 22, 27, ?
  9. 9.What comes next? 18, 27, 24, 33, 30, 39, ?
  10. 10.What comes next? 9, 14, 19, 24, 29, ?
  11. 11.What comes next? 2, 6, 18, 54, 162, ?
  12. 12.What comes next? 4, 8, 13, 19, 26, ?
  13. 13.What comes next? 17, 26, 35, 44, 53, ?
  14. 14.What comes next? 10, 12, 14, 16, 18, ?
  15. 15.What comes next? 19, 24, 29, 34, 39, ?
  16. 16.What comes next? 1, 2, 4, 8, 16, ?
  17. 17.What comes next? 5, 10, 20, 40, 80, ?
  18. 18.What comes next? 2, 8, 14, 20, 26, ?
  19. 19.What comes next? 7, 16, 25, 34, 43, ?
  20. 20.What comes next? 5, 12, 8, 15, 11, 18, ?
  21. 21.What comes next? 6, 8, 11, 15, 20, ?
  22. 22.What comes next? 2, 6, 4, 8, 6, 10, ?
  23. 23.What comes next? 2, 4, 8, 16, 32, ?
  24. 24.What comes next? 1, 4, 9, 16, 25, ?
  25. 25.What comes next? 9, 13, 12, 16, 15, 19, ?
  26. 26.What comes next? 3, 6, 12, 24, 48, ?
  27. 27.What comes next? 8, 15, 24, 35, 48, ?
  28. 28.What comes next? 4, 9, 16, 25, 36, ?
  29. 29.What comes next? 5, 10, 17, 26, 37, ?
  30. 30.What comes next? 15, 20, 25, 30, 35, ?
  31. 31.What comes next? 1, 3, 6, 10, 15, ?
  32. 32.What comes next? 26, 37, 50, 65, 82, ?
  33. 33.What comes next? 2, 5, 10, 17, 26, ?
  34. 34.What comes next? 5, 7, 9, 11, 13, ?
  35. 35.What comes next? 4, 12, 36, 108, 324, ?
  36. 36.What comes next? 3, 6, 10, 15, 21, ?
  37. 37.What comes next? 15, 18, 22, 27, 33, ?
  38. 38.What comes next? 3, 9, 27, 81, 243, ?
  39. 39.What comes next? 10, 19, 18, 27, 26, 35, ?
  40. 40.What comes next? 8, 11, 15, 20, 26, ?

Answer key

  1. 29
  2. 1215
  3. 40
  4. 128
  5. 82
  6. 28
  7. 18
  8. 32
  9. 36
  10. 34
  11. 486
  12. 34
  13. 62
  14. 20
  15. 44
  16. 32
  17. 160
  18. 32
  19. 52
  20. 14
  21. 26
  22. 8
  23. 64
  24. 36
  25. 18
  26. 96
  27. 63
  28. 49
  29. 50
  30. 40
  31. 21
  32. 101
  33. 37
  34. 15
  35. 972
  36. 28
  37. 40
  38. 729
  39. 34
  40. 33

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