Reteaching
Name
4-3
The Commutative Property
An array shows objects in equal rows.
This array shows 3 rows of 6 pennies.
The multiplication sentence for this array is
3 ⫻ 6 ⫽ 18.
You can use the Commutative (Order)
Property of Multiplication to multiply the
numbers in any order:
3 ⫻ 6 ⫽ 18 and 6 ⫻ 3 ⫽ 18.
Write a multiplication sentence for each array.
1.
2.
2 ⴛ 8 ⴝ 16
4 ⴛ 4 ⴝ 16
Complete each multiplication sentence. You may use counters or
draw a picture to help.
3. 3 ⫻ 4 ⫽ 12
4
⫻ 3 ⫽ 12
4. 5 ⫻ 2 ⫽ 10
2⫻
5
⫽ 10
5. Number Sense How can you use the Commutative Property to know that
is equal to
?
The first array shows 3 groups of 6. The
second array shows 6 groups of 3. By
the Commutative Property, 6 ⴛ 3 ⴝ 3 ⴛ 6.
R 4•3
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