← Number patterns: what comes next? lesson New set →

Number Series Worksheet for Maths Olympiad

Maths Olympiad topic 2: Number patterns: what comes next? · Set 537 · 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? 5, 7, 9, 11, 13, ? (a) 15 (b) 17 (c) 14 (d) 16
  2. 2.What comes next? 29, 39, 49, 59, 69, ? (a) 79 (b) 78 (c) 80 (d) 89
  3. 3.What comes next? 5, 10, 8, 13, 11, 16, ? (a) 14 (b) 21 (c) 13 (d) 18
  4. 4.What comes next? 4, 8, 12, 16, 20, ? (a) 23 (b) 24 (c) 28 (d) 25
  5. 5.What comes next? 38, 31, 24, 17, 10, ? (a) 4 (b) 2 (c) 5 (d) 3
  6. 6.What comes next? 1, 3, 9, 27, ? (a) 45 (b) 81 (c) 90 (d) 72
  7. 7.What comes next? 23, 34, 45, 56, 67, ? (a) 79 (b) 89 (c) 77 (d) 78
  8. 8.What comes next? 27, 24, 21, 18, 15, ? (a) 9 (b) 11 (c) 13 (d) 12
  9. 9.What comes next? 46, 40, 34, 28, 22, ? (a) 16 (b) 15 (c) 17 (d) 10
  10. 10.What comes next? 11, 14, 18, 23, 29, ? (a) 36 (b) 38 (c) 37 (d) 35
  11. 11.What comes next? 20, 24, 21, 25, 22, 26, ? (a) 29 (b) 22 (c) 23 (d) 30
  12. 12.What comes next? 13, 19, 25, 31, 37, ? (a) 43 (b) 44 (c) 49 (d) 42
  13. 13.What comes next? 60, 52, 44, 36, 28, ? (a) 20 (b) 19 (c) 21 (d) 12
  14. 14.What comes next? 30, 25, 20, 15, 10, ? (a) 7 (b) 6 (c) 4 (d) 5
  15. 15.What comes next? 15, 22, 20, 27, 25, 32, ? (a) 39 (b) 29 (c) 34 (d) 30
  16. 16.What comes next? 4, 6, 9, 13, 18, ? (a) 26 (b) 25 (c) 24 (d) 23
  17. 17.What comes next? 27, 36, 45, 54, 63, ? (a) 81 (b) 71 (c) 72 (d) 73
  18. 18.What comes next? 19, 22, 20, 23, 21, 24, ? (a) 26 (b) 27 (c) 21 (d) 22
  19. 19.What comes next? 13, 15, 18, 22, 27, ? (a) 32 (b) 34 (c) 33 (d) 35
  20. 20.What comes next? 47, 41, 35, 29, 23, ? (a) 17 (b) 16 (c) 11 (d) 18
  21. 21.What comes next? 9, 12, 15, 18, 21, ? (a) 23 (b) 27 (c) 25 (d) 24
  22. 22.What comes next? 18, 21, 25, 30, 36, ? (a) 42 (b) 44 (c) 45 (d) 43
  23. 23.What comes next? 18, 22, 27, 33, 40, ? (a) 50 (b) 47 (c) 49 (d) 48
  24. 24.What comes next? 25, 31, 37, 43, 49, ? (a) 61 (b) 56 (c) 54 (d) 55
  25. 25.What comes next? 15, 13, 11, 9, 7, ? (a) 5 (b) 3 (c) 4 (d) 6
  26. 26.What comes next? 64, 55, 46, 37, 28, ? (a) 20 (b) 10 (c) 18 (d) 19
  27. 27.What comes next? 12, 10, 8, 6, 4, ? (a) 1 (b) 4 (c) 2 (d) 3
  28. 28.What comes next? 75, 66, 57, 48, 39, ? (a) 21 (b) 31 (c) 29 (d) 30
  29. 29.What comes next? 35, 31, 27, 23, 19, ? (a) 15 (b) 14 (c) 16 (d) 11
  30. 30.What comes next? 2, 4, 8, 16, 32, ? (a) 80 (b) 64 (c) 65 (d) 48
  31. 31.What comes next? 18, 20, 23, 27, 32, ? (a) 37 (b) 38 (c) 40 (d) 39
  32. 32.What comes next? 28, 25, 22, 19, 16, ? (a) 14 (b) 10 (c) 13 (d) 12
  33. 33.What comes next? 10, 14, 19, 25, 32, ? (a) 41 (b) 40 (c) 42 (d) 39
  34. 34.What comes next? 20, 28, 36, 44, 52, ? (a) 68 (b) 61 (c) 59 (d) 60
  35. 35.What comes next? 11, 19, 13, 21, 15, 23, ? (a) 29 (b) 16 (c) 17 (d) 31
  36. 36.What comes next? 17, 20, 24, 29, 35, ? (a) 41 (b) 42 (c) 44 (d) 43
  37. 37.What comes next? 62, 53, 44, 35, 26, ? (a) 17 (b) 8 (c) 18 (d) 16
  38. 38.What comes next? 1, 4, 2, 5, 3, 6, ? (a) 9 (b) 8 (c) 4 (d) 3
  39. 39.What comes next? 28, 31, 34, 37, 40, ? (a) 42 (b) 46 (c) 43 (d) 44
  40. 40.What comes next? 65, 56, 47, 38, 29, ? (a) 11 (b) 20 (c) 21 (d) 19

Answer key

  1. 15
  2. 79
  3. 14
  4. 24
  5. 3
  6. 81
  7. 78
  8. 12
  9. 16
  10. 36
  11. 23
  12. 43
  13. 20
  14. 5
  15. 30
  16. 24
  17. 72
  18. 22
  19. 33
  20. 17
  21. 24
  22. 43
  23. 48
  24. 55
  25. 5
  26. 19
  27. 2
  28. 30
  29. 15
  30. 64
  31. 38
  32. 13
  33. 40
  34. 60
  35. 17
  36. 42
  37. 17
  38. 4
  39. 43
  40. 20

Free maths olympiad lessons, practice and worksheets at talentjr.in/maths-olympiad