Commutative Property
What is the commutative property of multiplication?
A rule in math that says when you change the order of the factors, it doesn't change the product!
What does the distributive property allow you to do with multiplication?
The distributive property allows you to break apart one factor to make a multiplication fact easier to solve.
1 x 8 = ?
8
If 3 × 4 = 12, what is 4 × 3?
4 x 3 = 12
Solve: 6 × (3 + 2) using the distributive property.
(6 x 3) + (6 x 2)
18 + 12
30
4 x 10 = ?
40
True or False: The order of factors does not affect the product in multiplication.
True!
Break apart 8 × 5 using the distributive property.
Answer may vary. Example may be:
(4 x 5) + (4 x 5)
20 + 20
40
Your product should be 40
6 x 7 = ?
42
If 7 × 2 = 14, what is 2 × 7?
2 x 7 = 14
Solve 4 × (2 + 3) using the distributive property
(4 x 2) + (4 x 3)
8 + 12
20
3 x 20 = ?
*Hint: Take away the zero, solve, then put the zero back!
60
Jenny has 5 baskets with 3 muffins in each. Joe knows he can solve this problem by doing 5 x 3. What is another multiplication fact Joe can use to solve this problem? Explain and solve!
Another fact is 3 x 5 = 15. This works because of the commutative property!
Which multiplication fact does this equation represent? Write the equation and solve.
(3 x 7) + (2 x 7) = _____
5 x 7 = 35
80 x 3 = ?
*Hint: Take away the zero, solve, then put the zero back!
240