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Basic Math Examples
72-4572−45
Step 1
Step 1.1
Set up the subtraction problem in long subtraction format.
77 | 22 | |
-− | 44 | 55 |
Step 1.2
Borrow 1010 from the digit in the next column to the left. Add the borrowed 1010 to 22. Reduce the number that was borrowed from by 11.
66 | 1212 | |
7 | 2 | |
- | 4 | 5 |
Step 1.3
Subtract 5 from 12.
6 | 12 | |
7 | 2 | |
- | 4 | 5 |
7 |
Step 1.4
Subtract 4 from 6.
6 | 12 | |
7 | 2 | |
- | 4 | 5 |
2 | 7 |
6 | 12 | |
7 | 2 | |
- | 4 | 5 |
2 | 7 |
Step 2
The result of 72-45 is 27.
27