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Basic Math Examples
20-7
Step 1
Step 1.1
Set up the subtraction problem in long subtraction format.
2 | 0 | |
- | 7 |
Step 1.2
Borrow 10 from the digit in the next column to the left. Add the borrowed 10 to 0. Reduce the number that was borrowed from by 1.
1 | 10 | |
2 | 0 | |
- | 7 |
Step 1.3
Subtract 7 from 10.
1 | 10 | |
2 | 0 | |
- | 7 | |
3 |
Step 1.4
Subtract 0 from 1.
1 | 10 | |
2 | 0 | |
- | 7 | |
1 | 3 |
1 | 10 | |
2 | 0 | |
- | 7 | |
1 | 3 |
Step 2
The result of 20-7 is 13.
13