This property is a subset of Properties Of Subtraction. To learn about other properties of subtraction see Properties Of Subtraction.

- The number zero is the "subtractive identity". This means subtracting zero
from any number does not change the answer or the number sign (+, -). Example:

0 - 7 = -7

7 - 0 = 7

## Practical Example |
## Abstract Example |
---|---|

0 - 7 = -7 -7 = -7 |
0 - a = -a |

If you want to learn
about the Math Properties of Addition, Multiplication, or Division see Math Properties.