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Number Series Worksheet for Maths Olympiad

Maths Olympiad topic 2: Number patterns: what comes next? · Set 250 · 40 questions
TalentJR

How to solve it (Look at the gaps): Look at two numbers side by side and find the jump: 5 → 10 is a jump of +5. Is the jump the same every time? Then add the same jump once more to the last number. Going down? Take away the same jump. Harder patterns: the jump can grow (+2, +3, +4 …) or the numbers can double (2, 4, 8, 16 …).

NameDateTime takenScore ___ / 40
  1. 1.What comes next? 6, 12, 24, 48, 96, ? (a) 144 (b) 240 (c) 192 (d) 193
  2. 2.What comes next? 11, 14, 18, 23, 29, ? (a) 35 (b) 38 (c) 36 (d) 37
  3. 3.What comes next? 9, 13, 18, 24, 31, ? (a) 41 (b) 40 (c) 38 (d) 39
  4. 4.What comes next? 26, 32, 38, 44, 50, ? (a) 56 (b) 55 (c) 57 (d) 62
  5. 5.What comes next? 12, 16, 15, 19, 18, 22, ? (a) 20 (b) 26 (c) 21 (d) 23
  6. 6.What comes next? 28, 37, 46, 55, 64, ? (a) 74 (b) 73 (c) 82 (d) 72
  7. 7.What comes next? 1, 3, 9, 27, ? (a) 72 (b) 45 (c) 90 (d) 81
  8. 8.What comes next? 3, 7, 11, 15, 19, ? (a) 27 (b) 22 (c) 24 (d) 23
  9. 9.What comes next? 24, 35, 46, 57, 68, ? (a) 79 (b) 78 (c) 90 (d) 80
  10. 10.What comes next? 50, 41, 32, 23, 14, ? (a) 7 (b) 6 (c) 5 (d) 4
  11. 11.What comes next? 6, 14, 22, 30, 38, ? (a) 47 (b) 46 (c) 45 (d) 54
  12. 12.What comes next? 4, 7, 11, 16, 22, ? (a) 30 (b) 31 (c) 28 (d) 29
  13. 13.What comes next? 18, 16, 14, 12, 10, ? (a) 8 (b) 7 (c) 6 (d) 9
  14. 14.What comes next? 9, 17, 25, 33, 41, ? (a) 49 (b) 48 (c) 50 (d) 57
  15. 15.What comes next? 3, 11, 5, 13, 7, 15, ? (a) 8 (b) 21 (c) 23 (d) 9
  16. 16.What comes next? 6, 9, 7, 10, 8, 11, ? (a) 8 (b) 9 (c) 13 (d) 14
  17. 17.What comes next? 17, 20, 18, 21, 19, 22, ? (a) 25 (b) 20 (c) 24 (d) 19
  18. 18.What comes next? 12, 13, 15, 18, 22, ? (a) 27 (b) 29 (c) 28 (d) 26
  19. 19.What comes next? 20, 27, 22, 29, 24, 31, ? (a) 26 (b) 38 (c) 36 (d) 25
  20. 20.What comes next? 39, 34, 29, 24, 19, ? (a) 9 (b) 14 (c) 13 (d) 15
  21. 21.What comes next? 54, 49, 44, 39, 34, ? (a) 24 (b) 28 (c) 30 (d) 29
  22. 22.What comes next? 4, 9, 8, 13, 12, 17, ? (a) 15 (b) 18 (c) 22 (d) 16
  23. 23.What comes next? 12, 16, 14, 18, 16, 20, ? (a) 18 (b) 17 (c) 22 (d) 24
  24. 24.What comes next? 3, 5, 7, 9, 11, ? (a) 14 (b) 13 (c) 12 (d) 15
  25. 25.What comes next? 20, 27, 34, 41, 48, ? (a) 62 (b) 56 (c) 55 (d) 54
  26. 26.What comes next? 3, 6, 12, 24, 48, ? (a) 72 (b) 97 (c) 96 (d) 120
  27. 27.What comes next? 4, 13, 9, 18, 14, 23, ? (a) 27 (b) 32 (c) 19 (d) 18
  28. 28.What comes next? 3, 8, 5, 10, 7, 12, ? (a) 17 (b) 9 (c) 8 (d) 15
  29. 29.What comes next? 2, 4, 8, 16, 32, ? (a) 65 (b) 64 (c) 80 (d) 48
  30. 30.What comes next? 30, 38, 46, 54, 62, ? (a) 71 (b) 69 (c) 70 (d) 78
  31. 31.What comes next? 16, 19, 23, 28, 34, ? (a) 43 (b) 41 (c) 40 (d) 42
  32. 32.What comes next? 45, 42, 39, 36, 33, ? (a) 30 (b) 27 (c) 31 (d) 29
  33. 33.What comes next? 49, 40, 31, 22, 13, ? (a) 3 (b) 6 (c) 4 (d) 5
  34. 34.What comes next? 44, 41, 38, 35, 32, ? (a) 28 (b) 26 (c) 29 (d) 30
  35. 35.What comes next? 6, 8, 11, 15, 20, ? (a) 27 (b) 28 (c) 25 (d) 26
  36. 36.What comes next? 38, 31, 24, 17, 10, ? (a) 2 (b) 4 (c) 5 (d) 3
  37. 37.What comes next? 13, 14, 16, 19, 23, ? (a) 27 (b) 30 (c) 28 (d) 29
  38. 38.What comes next? 8, 9, 11, 14, 18, ? (a) 22 (b) 24 (c) 25 (d) 23
  39. 39.What comes next? 22, 33, 44, 55, 66, ? (a) 76 (b) 78 (c) 88 (d) 77
  40. 40.What comes next? 6, 10, 9, 13, 12, 16, ? (a) 17 (b) 20 (c) 14 (d) 15

Answer key

  1. 192
  2. 36
  3. 39
  4. 56
  5. 21
  6. 73
  7. 81
  8. 23
  9. 79
  10. 5
  11. 46
  12. 29
  13. 8
  14. 49
  15. 9
  16. 9
  17. 20
  18. 27
  19. 26
  20. 14
  21. 29
  22. 16
  23. 18
  24. 13
  25. 55
  26. 96
  27. 19
  28. 9
  29. 64
  30. 70
  31. 41
  32. 30
  33. 4
  34. 29
  35. 26
  36. 3
  37. 28
  38. 23
  39. 77
  40. 15

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