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Number Series Worksheet for Maths Olympiad

Maths Olympiad topic 2: Number patterns: what comes next? · Set 110 · 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) 193 (b) 240 (c) 192 (d) 144
  2. 2.What comes next? 46, 41, 36, 31, 26, ? (a) 22 (b) 20 (c) 16 (d) 21
  3. 3.What comes next? 1, 2, 4, 8, 16, ? (a) 24 (b) 32 (c) 33 (d) 40
  4. 4.What comes next? 9, 11, 14, 18, 23, ? (a) 28 (b) 29 (c) 31 (d) 30
  5. 5.What comes next? 14, 17, 21, 26, 32, ? (a) 38 (b) 40 (c) 41 (d) 39
  6. 6.What comes next? 15, 20, 18, 23, 21, 26, ? (a) 31 (b) 23 (c) 28 (d) 24
  7. 7.What comes next? 5, 10, 20, 40, 80, ? (a) 200 (b) 160 (c) 161 (d) 120
  8. 8.What comes next? 4, 13, 5, 14, 6, 15, ? (a) 23 (b) 24 (c) 7 (d) 6
  9. 9.What comes next? 6, 10, 15, 21, 28, ? (a) 38 (b) 35 (c) 37 (d) 36
  10. 10.What comes next? 2, 5, 4, 7, 6, 9, ? (a) 10 (b) 12 (c) 8 (d) 7
  11. 11.What comes next? 24, 27, 30, 33, 36, ? (a) 38 (b) 40 (c) 39 (d) 42
  12. 12.What comes next? 22, 18, 14, 10, 6, ? (a) 1 (b) 4 (c) 2 (d) 3
  13. 13.What comes next? 11, 13, 15, 17, 19, ? (a) 21 (b) 22 (c) 23 (d) 20
  14. 14.What comes next? 19, 21, 24, 28, 33, ? (a) 41 (b) 38 (c) 39 (d) 40
  15. 15.What comes next? 11, 18, 15, 22, 19, 26, ? (a) 29 (b) 22 (c) 33 (d) 23
  16. 16.What comes next? 69, 60, 51, 42, 33, ? (a) 25 (b) 15 (c) 23 (d) 24
  17. 17.What comes next? 15, 22, 29, 36, 43, ? (a) 57 (b) 51 (c) 50 (d) 49
  18. 18.What comes next? 3, 4, 6, 9, 13, ? (a) 19 (b) 17 (c) 20 (d) 18
  19. 19.What comes next? 22, 19, 16, 13, 10, ? (a) 4 (b) 6 (c) 8 (d) 7
  20. 20.What comes next? 18, 22, 19, 23, 20, 24, ? (a) 28 (b) 20 (c) 27 (d) 21
  21. 21.What comes next? 30, 34, 38, 42, 46, ? (a) 54 (b) 50 (c) 49 (d) 51
  22. 22.What comes next? 9, 12, 16, 21, 27, ? (a) 35 (b) 34 (c) 33 (d) 36
  23. 23.What comes next? 14, 18, 23, 29, 36, ? (a) 45 (b) 44 (c) 46 (d) 43
  24. 24.What comes next? 11, 15, 20, 26, 33, ? (a) 40 (b) 41 (c) 42 (d) 43
  25. 25.What comes next? 11, 16, 21, 26, 31, ? (a) 35 (b) 37 (c) 36 (d) 41
  26. 26.What comes next? 3, 8, 13, 18, 23, ? (a) 29 (b) 28 (c) 27 (d) 33
  27. 27.What comes next? 2, 4, 8, 16, 32, ? (a) 65 (b) 48 (c) 64 (d) 80
  28. 28.What comes next? 50, 41, 32, 23, 14, ? (a) 4 (b) 7 (c) 6 (d) 5
  29. 29.What comes next? 41, 36, 31, 26, 21, ? (a) 15 (b) 11 (c) 16 (d) 17
  30. 30.What comes next? 3, 6, 10, 15, 21, ? (a) 27 (b) 29 (c) 30 (d) 28
  31. 31.What comes next? 11, 14, 17, 20, 23, ? (a) 29 (b) 27 (c) 25 (d) 26
  32. 32.What comes next? 5, 6, 8, 11, 15, ? (a) 22 (b) 20 (c) 21 (d) 19
  33. 33.What comes next? 19, 21, 23, 25, 27, ? (a) 31 (b) 29 (c) 30 (d) 28
  34. 34.What comes next? 25, 21, 17, 13, 9, ? (a) 4 (b) 6 (c) 5 (d) 1
  35. 35.What comes next? 14, 20, 26, 32, 38, ? (a) 45 (b) 43 (c) 50 (d) 44
  36. 36.What comes next? 1, 4, 2, 5, 3, 6, ? (a) 8 (b) 4 (c) 3 (d) 9
  37. 37.What comes next? 30, 32, 34, 36, 38, ? (a) 40 (b) 42 (c) 41 (d) 39
  38. 38.What comes next? 33, 30, 27, 24, 21, ? (a) 19 (b) 17 (c) 15 (d) 18
  39. 39.What comes next? 6, 13, 12, 19, 18, 25, ? (a) 32 (b) 23 (c) 26 (d) 24
  40. 40.What comes next? 4, 6, 9, 13, 18, ? (a) 26 (b) 25 (c) 23 (d) 24

Answer key

  1. 192
  2. 21
  3. 32
  4. 29
  5. 39
  6. 24
  7. 160
  8. 7
  9. 36
  10. 8
  11. 39
  12. 2
  13. 21
  14. 39
  15. 23
  16. 24
  17. 50
  18. 18
  19. 7
  20. 21
  21. 50
  22. 34
  23. 44
  24. 41
  25. 36
  26. 28
  27. 64
  28. 5
  29. 16
  30. 28
  31. 26
  32. 20
  33. 29
  34. 5
  35. 44
  36. 4
  37. 40
  38. 18
  39. 24
  40. 24

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