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Number Series Worksheet

Logical reasoning lesson 1: Number series · Set 86 · 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? 7, 11, 8, 12, 9, 13, ?
  2. 2.What comes next? 4, 11, 5, 12, 6, 13, ?
  3. 3.What comes next? 14, 17, 16, 19, 18, 21, ?
  4. 4.What comes next? 12, 13, 15, 18, 22, ?
  5. 5.What comes next? 2, 4, 8, 16, 32, ?
  6. 6.What comes next? 6, 12, 18, 24, 30, ?
  7. 7.What comes next? 11, 13, 16, 20, 25, ?
  8. 8.What comes next? 1, 4, 9, 16, 25, ?
  9. 9.What comes next? 10, 17, 26, 37, 50, ?
  10. 10.What comes next? 3, 10, 8, 15, 13, 20, ?
  11. 11.What comes next? 6, 15, 8, 17, 10, 19, ?
  12. 12.What comes next? 5, 9, 6, 10, 7, 11, ?
  13. 13.What comes next? 6, 8, 11, 15, 20, ?
  14. 14.What comes next? 20, 26, 32, 38, 44, ?
  15. 15.What comes next? 20, 28, 25, 33, 30, 38, ?
  16. 16.What comes next? 5, 10, 17, 26, 37, ?
  17. 17.What comes next? 4, 8, 16, 32, 64, ?
  18. 18.What comes next? 8, 14, 20, 26, 32, ?
  19. 19.What comes next? 2, 6, 18, 54, 162, ?
  20. 20.What comes next? 9, 16, 25, 36, 49, ?
  21. 21.What comes next? 16, 25, 36, 49, 64, ?
  22. 22.What comes next? 15, 24, 35, 48, 63, ?
  23. 23.What comes next? 17, 25, 33, 41, 49, ?
  24. 24.What comes next? 2, 6, 3, 7, 4, 8, ?
  25. 25.What comes next? 3, 6, 12, 24, 48, ?
  26. 26.What comes next? 16, 18, 20, 22, 24, ?
  27. 27.What comes next? 14, 18, 17, 21, 20, 24, ?
  28. 28.What comes next? 14, 15, 17, 20, 24, ?
  29. 29.What comes next? 4, 9, 16, 25, 36, ?
  30. 30.What comes next? 5, 11, 17, 23, 29, ?
  31. 31.What comes next? 4, 9, 14, 19, 24, ?
  32. 32.What comes next? 12, 19, 26, 33, 40, ?
  33. 33.What comes next? 20, 27, 34, 41, 48, ?
  34. 34.What comes next? 35, 48, 63, 80, 99, ?
  35. 35.What comes next? 8, 9, 11, 14, 18, ?
  36. 36.What comes next? 5, 15, 45, 135, 405, ?
  37. 37.What comes next? 14, 18, 22, 26, 30, ?
  38. 38.What comes next? 2, 5, 4, 7, 6, 9, ?
  39. 39.What comes next? 7, 9, 12, 16, 21, ?
  40. 40.What comes next? 5, 10, 20, 40, 80, ?

Answer key

  1. 10
  2. 7
  3. 20
  4. 27
  5. 64
  6. 36
  7. 31
  8. 36
  9. 65
  10. 18
  11. 12
  12. 8
  13. 26
  14. 50
  15. 35
  16. 50
  17. 128
  18. 38
  19. 486
  20. 64
  21. 81
  22. 80
  23. 57
  24. 5
  25. 96
  26. 26
  27. 23
  28. 29
  29. 49
  30. 35
  31. 29
  32. 47
  33. 55
  34. 120
  35. 23
  36. 1215
  37. 34
  38. 8
  39. 27
  40. 160

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