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Number Series Worksheet for Maths Olympiad

Maths Olympiad topic 2: Number patterns: what comes next? · Set 353 · 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? 8, 18, 28, 38, 48, ? (a) 68 (b) 59 (c) 57 (d) 58
  2. 2.What comes next? 12, 13, 15, 18, 22, ? (a) 26 (b) 29 (c) 28 (d) 27
  3. 3.What comes next? 3, 6, 12, 24, 48, ? (a) 96 (b) 97 (c) 120 (d) 72
  4. 4.What comes next? 47, 41, 35, 29, 23, ? (a) 18 (b) 16 (c) 11 (d) 17
  5. 5.What comes next? 4, 12, 20, 28, 36, ? (a) 52 (b) 43 (c) 45 (d) 44
  6. 6.What comes next? 6, 12, 24, 48, 96, ? (a) 144 (b) 240 (c) 193 (d) 192
  7. 7.What comes next? 49, 40, 31, 22, 13, ? (a) 4 (b) 6 (c) 5 (d) 3
  8. 8.What comes next? 18, 19, 21, 24, 28, ? (a) 35 (b) 34 (c) 33 (d) 32
  9. 9.What comes next? 10, 14, 13, 17, 16, 20, ? (a) 24 (b) 19 (c) 21 (d) 18
  10. 10.What comes next? 2, 6, 18, 54, ? (a) 180 (b) 144 (c) 162 (d) 90
  11. 11.What comes next? 57, 49, 41, 33, 25, ? (a) 17 (b) 16 (c) 9 (d) 18
  12. 12.What comes next? 1, 2, 4, 8, 16, ? (a) 40 (b) 32 (c) 33 (d) 24
  13. 13.What comes next? 4, 8, 16, 32, 64, ? (a) 129 (b) 160 (c) 96 (d) 128
  14. 14.What comes next? 15, 21, 18, 24, 21, 27, ? (a) 23 (b) 24 (c) 30 (d) 33
  15. 15.What comes next? 38, 35, 32, 29, 26, ? (a) 20 (b) 24 (c) 23 (d) 22
  16. 16.What comes next? 2, 3, 5, 8, 12, ? (a) 19 (b) 18 (c) 17 (d) 16
  17. 17.What comes next? 11, 14, 18, 23, 29, ? (a) 38 (b) 36 (c) 35 (d) 37
  18. 18.What comes next? 16, 13, 10, 7, 4, ? (a) 3 (b) 2 (c) 4 (d) 1
  19. 19.What comes next? 62, 53, 44, 35, 26, ? (a) 8 (b) 17 (c) 18 (d) 16
  20. 20.What comes next? 8, 11, 15, 20, 26, ? (a) 33 (b) 32 (c) 34 (d) 35
  21. 21.What comes next? 42, 36, 30, 24, 18, ? (a) 11 (b) 13 (c) 6 (d) 12
  22. 22.What comes next? 30, 32, 34, 36, 38, ? (a) 42 (b) 41 (c) 39 (d) 40
  23. 23.What comes next? 33, 30, 27, 24, 21, ? (a) 19 (b) 17 (c) 18 (d) 15
  24. 24.What comes next? 11, 16, 13, 18, 15, 20, ? (a) 16 (b) 25 (c) 23 (d) 17
  25. 25.What comes next? 5, 10, 20, 40, 80, ? (a) 160 (b) 120 (c) 161 (d) 200
  26. 26.What comes next? 1, 5, 10, 16, 23, ? (a) 31 (b) 33 (c) 30 (d) 32
  27. 27.What comes next? 11, 17, 15, 21, 19, 25, ? (a) 22 (b) 27 (c) 23 (d) 31
  28. 28.What comes next? 52, 44, 36, 28, 20, ? (a) 11 (b) 13 (c) 12 (d) 4
  29. 29.What comes next? 59, 52, 45, 38, 31, ? (a) 23 (b) 24 (c) 25 (d) 17
  30. 30.What comes next? 52, 43, 34, 25, 16, ? (a) 9 (b) 7 (c) 6 (d) 8
  31. 31.What comes next? 12, 19, 26, 33, 40, ? (a) 54 (b) 46 (c) 48 (d) 47
  32. 32.What comes next? 18, 20, 23, 27, 32, ? (a) 37 (b) 38 (c) 39 (d) 40
  33. 33.What comes next? 1, 3, 9, 27, ? (a) 81 (b) 90 (c) 45 (d) 72
  34. 34.What comes next? 25, 22, 19, 16, 13, ? (a) 7 (b) 11 (c) 10 (d) 9
  35. 35.What comes next? 21, 19, 17, 15, 13, ? (a) 12 (b) 10 (c) 9 (d) 11
  36. 36.What comes next? 6, 16, 26, 36, 46, ? (a) 55 (b) 57 (c) 66 (d) 56
  37. 37.What comes next? 9, 12, 16, 21, 27, ? (a) 36 (b) 33 (c) 35 (d) 34
  38. 38.What comes next? 7, 9, 12, 16, 21, ? (a) 28 (b) 29 (c) 26 (d) 27
  39. 39.What comes next? 2, 6, 4, 8, 6, 10, ? (a) 7 (b) 8 (c) 12 (d) 14
  40. 40.What comes next? 19, 21, 24, 28, 33, ? (a) 38 (b) 41 (c) 39 (d) 40

Answer key

  1. 58
  2. 27
  3. 96
  4. 17
  5. 44
  6. 192
  7. 4
  8. 33
  9. 19
  10. 162
  11. 17
  12. 32
  13. 128
  14. 24
  15. 23
  16. 17
  17. 36
  18. 1
  19. 17
  20. 33
  21. 12
  22. 40
  23. 18
  24. 17
  25. 160
  26. 31
  27. 23
  28. 12
  29. 24
  30. 7
  31. 47
  32. 38
  33. 81
  34. 10
  35. 11
  36. 56
  37. 34
  38. 27
  39. 8
  40. 39

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