Number Series Worksheet for Maths Olympiad
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.What comes next? 6, 12, 24, 48, 96, ? (a) 193 (b) 192 (c) 144 (d) 240
- 2.What comes next? 1, 4, 2, 5, 3, 6, ? (a) 8 (b) 3 (c) 4 (d) 9
- 3.What comes next? 5, 7, 10, 14, 19, ? (a) 27 (b) 25 (c) 26 (d) 24
- 4.What comes next? 3, 4, 6, 9, 13, ? (a) 20 (b) 18 (c) 17 (d) 19
- 5.What comes next? 5, 11, 10, 16, 15, 21, ? (a) 19 (b) 20 (c) 22 (d) 27
- 6.What comes next? 3, 7, 12, 18, 25, ? (a) 33 (b) 32 (c) 34 (d) 35
- 7.What comes next? 3, 9, 27, 81, ? (a) 243 (b) 135 (c) 216 (d) 270
- 8.What comes next? 18, 27, 25, 34, 32, 41, ? (a) 50 (b) 43 (c) 38 (d) 39
- 9.What comes next? 2, 6, 18, 54, ? (a) 90 (b) 162 (c) 180 (d) 144
- 10.What comes next? 19, 26, 24, 31, 29, 36, ? (a) 38 (b) 43 (c) 33 (d) 34
- 11.What comes next? 24, 20, 16, 12, 8, ? (a) 5 (b) 3 (c) 6 (d) 4
- 12.What comes next? 5, 10, 20, 40, 80, ? (a) 120 (b) 161 (c) 200 (d) 160
- 13.What comes next? 22, 28, 34, 40, 46, ? (a) 58 (b) 53 (c) 51 (d) 52
- 14.What comes next? 12, 10, 8, 6, 4, ? (a) 2 (b) 1 (c) 4 (d) 3
- 15.What comes next? 18, 30, 42, 54, 66, ? (a) 90 (b) 78 (c) 77 (d) 79
- 16.What comes next? 14, 22, 19, 27, 24, 32, ? (a) 35 (b) 28 (c) 29 (d) 40
- 17.What comes next? 13, 11, 9, 7, 5, ? (a) 3 (b) 1 (c) 4 (d) 2
- 18.What comes next? 31, 29, 27, 25, 23, ? (a) 21 (b) 19 (c) 22 (d) 20
- 19.What comes next? 13, 18, 23, 28, 33, ? (a) 43 (b) 38 (c) 39 (d) 37
- 20.What comes next? 4, 7, 10, 13, 16, ? (a) 18 (b) 20 (c) 19 (d) 22
- 21.What comes next? 7, 9, 12, 16, 21, ? (a) 29 (b) 27 (c) 26 (d) 28
- 22.What comes next? 17, 21, 26, 32, 39, ? (a) 46 (b) 49 (c) 47 (d) 48
- 23.What comes next? 19, 22, 26, 31, 37, ? (a) 46 (b) 43 (c) 45 (d) 44
- 24.What comes next? 13, 17, 22, 28, 35, ? (a) 43 (b) 45 (c) 42 (d) 44
- 25.What comes next? 19, 20, 22, 25, 29, ? (a) 34 (b) 35 (c) 36 (d) 33
- 26.What comes next? 4, 8, 16, 32, 64, ? (a) 129 (b) 160 (c) 96 (d) 128
- 27.What comes next? 1, 3, 9, 27, ? (a) 81 (b) 45 (c) 72 (d) 90
- 28.What comes next? 21, 24, 27, 30, 33, ? (a) 39 (b) 35 (c) 36 (d) 37
- 29.What comes next? 20, 24, 29, 35, 42, ? (a) 49 (b) 50 (c) 52 (d) 51
- 30.What comes next? 28, 25, 22, 19, 16, ? (a) 13 (b) 10 (c) 14 (d) 12
- 31.What comes next? 28, 35, 42, 49, 56, ? (a) 63 (b) 64 (c) 62 (d) 70
- 32.What comes next? 63, 55, 47, 39, 31, ? (a) 23 (b) 15 (c) 22 (d) 24
- 33.What comes next? 1, 4, 8, 13, 19, ? (a) 25 (b) 27 (c) 28 (d) 26
- 34.What comes next? 3, 6, 12, 24, 48, ? (a) 97 (b) 72 (c) 120 (d) 96
- 35.What comes next? 2, 3, 5, 8, 12, ? (a) 18 (b) 17 (c) 19 (d) 16
- 36.What comes next? 1, 6, 5, 10, 9, 14, ? (a) 13 (b) 12 (c) 19 (d) 15
- 37.What comes next? 10, 14, 12, 16, 14, 18, ? (a) 20 (b) 22 (c) 16 (d) 15
- 38.What comes next? 49, 45, 41, 37, 33, ? (a) 25 (b) 28 (c) 29 (d) 30
- 39.What comes next? 7, 15, 10, 18, 13, 21, ? (a) 16 (b) 29 (c) 26 (d) 15
- 40.What comes next? 25, 35, 45, 55, 65, ? (a) 75 (b) 74 (c) 85 (d) 76
Answer key
- 192
- 4
- 25
- 18
- 20
- 33
- 243
- 39
- 162
- 34
- 4
- 160
- 52
- 2
- 78
- 29
- 3
- 21
- 38
- 19
- 27
- 47
- 44
- 43
- 34
- 128
- 81
- 36
- 50
- 13
- 63
- 23
- 26
- 96
- 17
- 13
- 16
- 29
- 16
- 75
Free maths olympiad lessons, practice and worksheets at talentjr.in/maths-olympiad