Subtraction to 20 crossing 10
On this page children practise subtracting within 20 when the ones cross 10, like 13 - 5. Start with the short method and the examples, then use the online practice or print a worksheet with answers.
How to solve this
- See how far it is from the first number back to 10.
- Split the number you take away so part of it reaches 10.
- Take away the rest from 10.
Examples
13 - 5 = ?
8
16 - 9 = ?
7
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.
- ___ - 4 = 16
- 20 - 4 = ___
- 12 - 3 = ___
- 20 - 2 = ___
- ___ - 3 = 8
- ___ - 1 = 9
- ___ - 5 = 8
- 10 - 8 = ___
Show answers
- 20
- 16
- 9
- 18
- 11
- 10
- 13
- 2