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? 60, 54, 48, 42, 36, ? (a) 30 (b) 29 (c) 31 (d) 24
- 2.What comes next? 5, 7, 10, 14, 19, ? (a) 24 (b) 26 (c) 25 (d) 27
- 3.What comes next? 28, 36, 44, 52, 60, ? (a) 67 (b) 76 (c) 68 (d) 69
- 4.What comes next? 10, 19, 12, 21, 14, 23, ? (a) 16 (b) 30 (c) 32 (d) 15
- 5.What comes next? 40, 34, 28, 22, 16, ? (a) 4 (b) 11 (c) 10 (d) 9
- 6.What comes next? 11, 9, 7, 5, 3, ? (a) 3 (b) 4 (c) 1 (d) 2
- 7.What comes next? 7, 11, 16, 22, 29, ? (a) 37 (b) 39 (c) 38 (d) 36
- 8.What comes next? 18, 19, 21, 24, 28, ? (a) 34 (b) 32 (c) 33 (d) 35
- 9.What comes next? 26, 32, 38, 44, 50, ? (a) 55 (b) 56 (c) 57 (d) 62
- 10.What comes next? 23, 27, 31, 35, 39, ? (a) 44 (b) 47 (c) 43 (d) 42
- 11.What comes next? 1, 3, 9, 27, ? (a) 81 (b) 45 (c) 90 (d) 72
- 12.What comes next? 20, 23, 22, 25, 24, 27, ? (a) 30 (b) 26 (c) 28 (d) 25
- 13.What comes next? 4, 8, 16, 32, 64, ? (a) 129 (b) 160 (c) 128 (d) 96
- 14.What comes next? 14, 21, 17, 24, 20, 27, ? (a) 34 (b) 22 (c) 23 (d) 31
- 15.What comes next? 10, 13, 17, 22, 28, ? (a) 37 (b) 36 (c) 34 (d) 35
- 16.What comes next? 14, 26, 38, 50, 62, ? (a) 73 (b) 74 (c) 75 (d) 86
- 17.What comes next? 12, 16, 21, 27, 34, ? (a) 44 (b) 43 (c) 41 (d) 42
- 18.What comes next? 11, 13, 16, 20, 25, ? (a) 31 (b) 32 (c) 30 (d) 33
- 19.What comes next? 8, 14, 13, 19, 18, 24, ? (a) 25 (b) 30 (c) 22 (d) 23
- 20.What comes next? 28, 24, 20, 16, 12, ? (a) 9 (b) 7 (c) 8 (d) 4
- 21.What comes next? 5, 6, 8, 11, 15, ? (a) 19 (b) 22 (c) 20 (d) 21
- 22.What comes next? 34, 28, 22, 16, 10, ? (a) 5 (b) 4 (c) 3 (d) 6
- 23.What comes next? 33, 30, 27, 24, 21, ? (a) 17 (b) 15 (c) 19 (d) 18
- 24.What comes next? 36, 30, 24, 18, 12, ? (a) 7 (b) 5 (c) 6 (d) 8
- 25.What comes next? 6, 16, 26, 36, 46, ? (a) 66 (b) 56 (c) 55 (d) 57
- 26.What comes next? 6, 13, 11, 18, 16, 23, ? (a) 25 (b) 21 (c) 20 (d) 30
- 27.What comes next? 5, 10, 20, 40, 80, ? (a) 160 (b) 200 (c) 120 (d) 161
- 28.What comes next? 19, 20, 22, 25, 29, ? (a) 34 (b) 36 (c) 35 (d) 33
- 29.What comes next? 3, 15, 27, 39, 51, ? (a) 63 (b) 75 (c) 64 (d) 62
- 30.What comes next? 1, 4, 8, 13, 19, ? (a) 27 (b) 26 (c) 28 (d) 25
- 31.What comes next? 5, 9, 14, 20, 27, ? (a) 37 (b) 34 (c) 35 (d) 36
- 32.What comes next? 13, 16, 20, 25, 31, ? (a) 38 (b) 40 (c) 37 (d) 39
- 33.What comes next? 6, 12, 18, 24, 30, ? (a) 36 (b) 35 (c) 42 (d) 37
- 34.What comes next? 18, 20, 23, 27, 32, ? (a) 40 (b) 38 (c) 39 (d) 37
- 35.What comes next? 30, 41, 52, 63, 74, ? (a) 96 (b) 86 (c) 84 (d) 85
- 36.What comes next? 16, 20, 25, 31, 38, ? (a) 47 (b) 45 (c) 48 (d) 46
- 37.What comes next? 50, 42, 34, 26, 18, ? (a) 11 (b) 10 (c) 2 (d) 9
- 38.What comes next? 15, 21, 20, 26, 25, 31, ? (a) 32 (b) 37 (c) 30 (d) 29
- 39.What comes next? 54, 48, 42, 36, 30, ? (a) 18 (b) 24 (c) 23 (d) 25
- 40.What comes next? 10, 14, 13, 17, 16, 20, ? (a) 21 (b) 18 (c) 24 (d) 19
Answer key
- 30
- 25
- 68
- 16
- 10
- 1
- 37
- 33
- 56
- 43
- 81
- 26
- 128
- 23
- 35
- 74
- 42
- 31
- 23
- 8
- 20
- 4
- 18
- 6
- 56
- 21
- 160
- 34
- 63
- 26
- 35
- 38
- 36
- 38
- 85
- 46
- 10
- 30
- 24
- 19
Free maths olympiad lessons, practice and worksheets at talentjr.in/maths-olympiad