Commutative/Distributive Property
3 x 8 = 24
In the equation below, which part do you start with?
6 + (2 x 5)
You start with (2 x 5)
2 x 9 = r
r = 18
Sarah had 8 groups of apples. If each group of apples has 4 apples, how many apples does Sarah have altogether?
Sarah has 32 apples.
8 x 5 = ___ x 8
8 x 5 = 5 x 8
Solve the problem
(3 x 2) + 6 = e
e =
e = 12
16 ÷ 2 = m
m = 8
Jason had 40 pencils. He shares them with his 7 friends. How many pencils do Jason and his 7 friends each get?
Jason and his friends each have 5 pencils.
6 x 5 = ?
What is the product, and what is the commutative fact?
The product is 30, and the commutative fact is 5 x 6 = 30
Is this true or false?
(2 x 5) + 7 = 24
False
(2 x 5) + 7 = 17
6 x 9 = w
w = 54
There are 8 girls and 6 boys in the class. The students are going to the zoo and must pay $6 each to enter. How much will the zoo cost for the class all together?
The zoo will cost $84.
8 x 5 = ?
(__ x 5) + (5 x 5) =
What number goes in the blank?
3
(3 x 5) + (5 x 5) =
Does it matter what order you do the equation below? Why or why not?
6 + 5 + 8 = p
No it doesn't, because the only operation in the equation is addition.
90 ÷ 9 = b
b = 10
Make an equation with a letter to represent the unknown.
Stella has 63 stickers. She puts them into groups of 9. How many groups does she make?
63 ÷ 9 = n
n = 7
Use the distributive property to break up the following equation and solve.
9 x 7 = p
(___ x ____) + (___ x ____) = p
p = 63
ex. (5 x 7) + (4 x 7) =
35 + 28 =
63
Does it matter what order you do the following equation? Why or why not?
4 x (5 + 9)
Yes, because there are parentheses and more than one operation.
Look at the equation below. Find the product, and the 3 related facts.
7 x 4 = d
d = 28
4 x 7 = 28
28 ÷ 4 = 7
28 ÷ 7 = 4
Make an equation with a letter to represent the unknown.
Tim spends 5 days a week working on his computer. He spends a total of 30 hours working in one week. If he spends the same amount of time each day, how much time does Tim spend working on his computer each day?
5 x n = 30
30 ÷ 5 = n
n = 6