|
Changing the order of
the addends does not change
the sum. |
| 5 + 3 + 2 = 10 |
3 + 5 + 2 = 10 |
|
(5 + 3) + 2 = 10 |
(3 + 5) + 2 = 10 |
|
( 8 ) + 2 =
10 |
( 8 ) + 2 =
10 |
|
 Look at another example.
|
|
3 + 6 + 4 = 13 6 + 4 + 3 = 13
|
|
(3 + 6)
+ 4 = 13
(6 + 4)
+ 3 = 13 |
|
( 9 )
+ 4 = 13
( 10 )
+ 3 = 13 |
|
Let's look at one more.
|
|
5 + 2 + 9 = 16
9 + 5 + 2 = 16 |
|
(5 + 2)
+ 9 = 16
(9 + 5)
+ 2 = 16 |
|
( 7 )
+ 9 = 16
( 14 )
+ 2 = 16 |
