|
The
Associative
Property of Multiplication can help you to multiply
quickly and correctly.
|
Changing the grouping of
the factors does not
change
the product. |
| rows: 3
groups of 2 |
rows: 2
groups of 3 |
 |
 |
| columns:
6 groups of 3 |
columns:
6 groups of 3 |
| (3 x 2) x 3 = 18 |
3 x (2 x 3) = 18 |
| |
|
| Think:
"grouping." Associative Property |
|
When
Multiplying:
**
First multiplying the parenthesis ( )
** Then
multiply the last number to get your product.
|
(5
x 7) x
2
35 x 2 = 70
is the same as...
5 x (7 x
2)
5
x
14 = 70 |
Another
Way To Look At It...
When
Multiplying:
|
(2
x 5) x 3 =
2 x (5 x
3)
10 x 3 = 2
x 15
30 = 30
|
|
Example |
|
associative
property
|
|
(2 x 3)
x 4 = 2 x (3
x 4) |
|
6
x 4 = 2
x
12 |
|
24 =
24 |
| |
 |
Remember:
Multiply the
number in parentheses
( ) first. |
Let's Practice!
click
here
| 
