Number sequences
Practise fixed steps, decreasing sequences, doubling, halving, and simple alternating patterns.
How to solve this
- Subtract one term from the next to test for a fixed step: 1200, 1300, 1400 adds 100 each time.
- If the numbers grow quickly, check for doubling: 250, 500, 1000, 2000 doubles each term.
- For decreasing sequences, the step is negative; 10,000, 9500, 9000 subtracts 500 each time.
Examples
1200, 1300, 1400, __
1500
10,000, 9500, 9000, __
8500
250, 500, 1000, 2000, __
4000
Practice problems with answers
Solve these problems on paper or out loud, then check the answer key. The online practice and the printable worksheet give a new set every time.
- 2 000, 3 000, 4 000, ___
- 6 800, 6 700, 6 600, ___
- 4 850, 4 900, 4 950, ___
- 1 700, 1 800, 1 900, ___
- 1 850, 1 900, 1 950, ___
- 2 500, 2 000, 1 500, ___
- 1 500, 1 750, 2 000, ___
- 5 750, 5 800, 5 850, ___
Show answers
- 5 000
- 6 500
- 5 000
- 2 000
- 2 000
- 1 000
- 2 250
- 5 900