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Lesson
Page
Patterns + Functions |
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The
properties
of multiplication can help you to multiply quickly and correctly.
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Changing the order of the
factors does not
change the product. |
| rows: 4
groups of 2 |
rows: 2
groups of 4 |
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| 4 x 2 = 8 |
2 x 4 = 8 |
| Think:
"order." Commutative Property |
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Changing the grouping of
the factors does not change
the product. |
| rows: 3
groups of 2 |
rows: 2
groups of 3 |
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| columns:
6 groups of 3 |
columns:
6 groups of 3 |
| (3 x 2) x 3 = 18 |
3 x (2 x 3) = 18 |
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| Think:
"grouping." Associative Property |
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Examples |
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associative
property
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commutative property |
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(2 x 3) x 4 = 2 x (3 x 4) |
8 x 5 = 5 x 8 |
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6 x 4 = 2 x
12 |
8 x 5 = 40 |
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24 = 24 |
5 x 8 = 40 |
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Let's Practice!
click
here
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Remember:
Multiply the
number in parentheses
( ) first. |
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Elementary Test Prep
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