Multiply
Strategies
Properties
Divide
100
Solve: 2 x 6
12
100
What strategy is shown below?
Equal Groups
100
Which shows the commutative property?
a. 4x2=4+2
b. 4x2=2x4
c. 4x2=2+4
d. 4x2=4x2
b. 4x2=2x4
100
Solve: 20 / 5
4
200
Solve: 3 x 7
21
200
What strategy is shown below?
An Array
200
What property is being shown?
2 x 4 = 4 x 2
Commutative Property
200
Solve: 24 / 4
6
300
Solve: 4 x 6
24
300
Model the repeated addition for 4 x 5.
5 + 5 + 5 + 5 = 20
or
4 + 4 + 4 + 4 + 4 = 20
300
Which property decomposes a difficult number to make it easier to work with?
Distributive Property
300
Solve: 36 / 6
6
400
Solve: 4 x 7
28
400
What strategy has rows and columns? Model using 3 x 4.
An array.
400
Use the distributive property to solve.
6 x 4
(5 x 4) + (1 x 4)
(3 x 4) + (3 x 4)
(4 x 4) + (2 x 4)
(6 x 2) + (6 x 2)
(6 x 3) + (6 x 1)
400
Solve: 21 / 7
3
500
Solve: 8 x 6
48
500
The 3rd grade hall has 4 classrooms. Each classroom has 5 tables. How many tables are there in all?
Use a strategy to solve.
4 x 5= 20
500
Use the distributive property to solve.
3 x 6
(2 x 6) + (1 x 6) = 18
(3 x 3) + (3 x 3) = 18
(3 x 5) + (3 x 1) = 18
(3 x 4) + (3 x 2) = 18
500
Apollo has 18 pencils with 6 pencils in each box.
How many boxes does Apollo have?
18 / 6= 3