Subtraction to 20 without crossing 10
On this page children practise subtracting within 20 when the ones do not cross 10, like 17 - 4. Start with the short method and the examples, then use the online practice or print a worksheet with answers.
How to solve this
- Subtract the ones digits first.
- The ones are large enough, so there is no borrow.
- Keep the ten and write the new ones.
Examples
17 - 4 = ?
13
19 - 5 = ?
14
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.
- 1 - 0 = ___
- 4 - 0 = ___
- 4 - 1 = ___
- 1 - 1 = ___
- 6 - 0 = ___
- 5 - 5 = ___
- ___ - 0 = 7
- 9 - 4 = ___
Show answers
- 1
- 4
- 3
- 0
- 6
- 0
- 7
- 5