|
What does it mean
to say that addition is commutative?
 |
It is the property
which states that for all real numbers a, b, and c,
their
sum is
always the same, regardless of their order:
a + b + c = c + b + a |
|
In other words... |
 |
|
If we have some numbers
that we are adding together, it doesn't matter if we change the
order of the numbers because the answer will be the same. |
 |
| 1 + 2 + 3 |
= |
3 + 2 + 1 |
| 3 + 3
|
= |
5 + 1 |
| 6 |
= |
6 |
 |
| 15 + 2.2 + 3.7 |
= |
3.7 + 2.2 + 15 |
| 17.2 + 3.7
|
= |
5.9 + 15 |
| 20.9 |
= |
20.9 |
 |
| 122( 2 + 13) |
= |
122 (13 + 2) |
| 122 * 15 |
= |
122 * 15 |
| 1830 |
= |
1830 |
|
