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Number Series Worksheet

Logical reasoning lesson 1: Number series · Set 87 · 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? 1, 7, 13, 19, 25, ?
  2. 2.What comes next? 6, 12, 9, 15, 12, 18, ?
  3. 3.What comes next? 12, 14, 17, 21, 26, ?
  4. 4.What comes next? 37, 50, 65, 82, 101, ?
  5. 5.What comes next? 10, 12, 14, 16, 18, ?
  6. 6.What comes next? 3, 9, 27, 81, 243, ?
  7. 7.What comes next? 5, 9, 13, 17, 21, ?
  8. 8.What comes next? 18, 21, 19, 22, 20, 23, ?
  9. 9.What comes next? 36, 49, 64, 81, 100, ?
  10. 10.What comes next? 1, 3, 9, 27, 81, ?
  11. 11.What comes next? 4, 9, 14, 19, 24, ?
  12. 12.What comes next? 11, 12, 14, 17, 21, ?
  13. 13.What comes next? 4, 9, 16, 25, 36, ?
  14. 14.What comes next? 5, 14, 23, 32, 41, ?
  15. 15.What comes next? 5, 14, 12, 21, 19, 28, ?
  16. 16.What comes next? 19, 26, 33, 40, 47, ?
  17. 17.What comes next? 13, 18, 15, 20, 17, 22, ?
  18. 18.What comes next? 3, 6, 9, 12, 15, ?
  19. 19.What comes next? 12, 20, 14, 22, 16, 24, ?
  20. 20.What comes next? 1, 2, 4, 7, 11, ?
  21. 21.What comes next? 17, 21, 25, 29, 33, ?
  22. 22.What comes next? 8, 11, 14, 17, 20, ?
  23. 23.What comes next? 24, 35, 48, 63, 80, ?
  24. 24.What comes next? 18, 22, 21, 25, 24, 28, ?
  25. 25.What comes next? 4, 7, 11, 16, 22, ?
  26. 26.What comes next? 5, 15, 45, 135, 405, ?
  27. 27.What comes next? 1, 2, 4, 8, 16, ?
  28. 28.What comes next? 14, 16, 19, 23, 28, ?
  29. 29.What comes next? 5, 10, 20, 40, 80, ?
  30. 30.What comes next? 11, 20, 29, 38, 47, ?
  31. 31.What comes next? 4, 8, 16, 32, 64, ?
  32. 32.What comes next? 11, 16, 21, 26, 31, ?
  33. 33.What comes next? 13, 15, 17, 19, 21, ?
  34. 34.What comes next? 26, 37, 50, 65, 82, ?
  35. 35.What comes next? 8, 15, 14, 21, 20, 27, ?
  36. 36.What comes next? 14, 21, 19, 26, 24, 31, ?
  37. 37.What comes next? 17, 24, 31, 38, 45, ?
  38. 38.What comes next? 14, 17, 21, 26, 32, ?
  39. 39.What comes next? 9, 10, 12, 15, 19, ?
  40. 40.What comes next? 20, 26, 32, 38, 44, ?

Answer key

  1. 31
  2. 15
  3. 32
  4. 122
  5. 20
  6. 729
  7. 25
  8. 21
  9. 121
  10. 243
  11. 29
  12. 26
  13. 49
  14. 50
  15. 26
  16. 54
  17. 19
  18. 18
  19. 18
  20. 16
  21. 37
  22. 23
  23. 99
  24. 27
  25. 29
  26. 1215
  27. 32
  28. 34
  29. 160
  30. 56
  31. 128
  32. 36
  33. 23
  34. 101
  35. 26
  36. 29
  37. 52
  38. 39
  39. 24
  40. 50

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