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Number Series Worksheet

Logical reasoning lesson 1: Number series · Set 271 · 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? 15, 20, 18, 23, 21, 26, ?
  2. 2.What comes next? 16, 24, 18, 26, 20, 28, ?
  3. 3.What comes next? 4, 6, 9, 13, 18, ?
  4. 4.What comes next? 7, 12, 10, 15, 13, 18, ?
  5. 5.What comes next? 3, 8, 15, 24, 35, ?
  6. 6.What comes next? 1, 3, 9, 27, 81, ?
  7. 7.What comes next? 4, 8, 16, 32, 64, ?
  8. 8.What comes next? 6, 10, 7, 11, 8, 12, ?
  9. 9.What comes next? 5, 12, 19, 26, 33, ?
  10. 10.What comes next? 35, 48, 63, 80, 99, ?
  11. 11.What comes next? 5, 13, 11, 19, 17, 25, ?
  12. 12.What comes next? 1, 4, 9, 16, 25, ?
  13. 13.What comes next? 14, 17, 21, 26, 32, ?
  14. 14.What comes next? 7, 10, 14, 19, 25, ?
  15. 15.What comes next? 1, 2, 4, 8, 16, ?
  16. 16.What comes next? 1, 5, 2, 6, 3, 7, ?
  17. 17.What comes next? 16, 21, 26, 31, 36, ?
  18. 18.What comes next? 2, 4, 8, 16, 32, ?
  19. 19.What comes next? 2, 6, 5, 9, 8, 12, ?
  20. 20.What comes next? 13, 14, 16, 19, 23, ?
  21. 21.What comes next? 9, 14, 19, 24, 29, ?
  22. 22.What comes next? 37, 50, 65, 82, 101, ?
  23. 23.What comes next? 17, 20, 18, 21, 19, 22, ?
  24. 24.What comes next? 3, 8, 5, 10, 7, 12, ?
  25. 25.What comes next? 4, 10, 6, 12, 8, 14, ?
  26. 26.What comes next? 18, 25, 20, 27, 22, 29, ?
  27. 27.What comes next? 8, 9, 11, 14, 18, ?
  28. 28.What comes next? 6, 11, 16, 21, 26, ?
  29. 29.What comes next? 15, 24, 33, 42, 51, ?
  30. 30.What comes next? 13, 15, 18, 22, 27, ?
  31. 31.What comes next? 13, 18, 23, 28, 33, ?
  32. 32.What comes next? 19, 23, 21, 25, 23, 27, ?
  33. 33.What comes next? 5, 8, 12, 17, 23, ?
  34. 34.What comes next? 18, 20, 22, 24, 26, ?
  35. 35.What comes next? 15, 18, 16, 19, 17, 20, ?
  36. 36.What comes next? 3, 9, 4, 10, 5, 11, ?
  37. 37.What comes next? 17, 26, 37, 50, 65, ?
  38. 38.What comes next? 12, 14, 17, 21, 26, ?
  39. 39.What comes next? 4, 12, 36, 108, 324, ?
  40. 40.What comes next? 2, 6, 18, 54, 162, ?

Answer key

  1. 24
  2. 22
  3. 24
  4. 16
  5. 48
  6. 243
  7. 128
  8. 9
  9. 40
  10. 120
  11. 23
  12. 36
  13. 39
  14. 32
  15. 32
  16. 4
  17. 41
  18. 64
  19. 11
  20. 28
  21. 34
  22. 122
  23. 20
  24. 9
  25. 10
  26. 24
  27. 23
  28. 31
  29. 60
  30. 33
  31. 38
  32. 25
  33. 30
  34. 28
  35. 18
  36. 6
  37. 82
  38. 32
  39. 972
  40. 486

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