Associative Property
Given the equation 3 x 9 x 2 = 54, which other equation also equals 54?
3 x 9
9 x 2
9 x 2 x 3
9 + 3 + 2
9 x 2 x 3
3 x 5 = 15, so 5 x 3 = ____
15
d x 4 = 24
d = 6
60 x 4 = _____
60 x 4 = 240
4 x 7 = 28
Which equation is part of this fact family?
28 ÷ 7 = 4
4 ÷ 7 = 28
28 ÷ 7 = 4
Which equation will have the same answer as 5 x 2 x 8?
8 x 5 x 2
3 x 2 x 8
5 + 2 + 8
5 - 2 - 8
8 x 5 x 2
4 x 20 = 80, so 20 x 4 = ___
80
m x 8 = 64
m = 8
40 x 8 = ?
40 x 8 = 320
6 x 8 = 48
What division sentence would be part of this fact family?
48 ÷ 6 = 8
48 ÷ 8 = 6
Is this number sentence true?
(3 x 5) x 4 = (3 + 5) x 4
No.
If 4 x 3 = 12, what does 3 x 4 equal?
12
w ÷ 6 = 6
w = 36
4 x 50 = ____ tens
20 tens
200
12 ÷ 3 = 4
12 ÷ 4 = 3
Which of the following is equivalent to the expression (6 x 5) x 3?
6 x (5 x 3)
3 x (6 + 3)
6 + 5 + 3
6 x (5 x 3)
6 x 7 = 42
Write another multiplication sentence using the commutative property.
7 x 6 = 42
30 ÷ 5 = a
a = 6
6 x 30 = ____ tens
6 x 30 = 18 tens
Write two division equations that would be in this fact family.
8 x 7 = 56
56 ÷ 7 = 8
56 ÷ 8 =7
Zoe writes the equation (6 x 5) x 3 = 90 on the board. Which other equation will have the same answer?
6 + (5 x 3) 6 x (5 x 3)
6 x (5 x 3)
8 x 5 = _____, so 5 x 8 = _____
40
7 x 9 = h
h = 63
How many tens are equivalent to the product of 80 x 6 tens?
48 tens (480)
4 x 5 = 20
Choose 3 equations that follow from this number sentence.
20 ÷ 5 = 4
20 - 5 = 15
20 ÷ 4 = 5
(2 x 5) x (2 x 5) = 100
(2 x 5) + (2 x 5) = 20
20 ÷ 5 = 4
20 ÷ 4 = 5
(2 x 5) + (2 x 5) = 20