Associative Property of Multiplication
Solve: 2 x 2 x 3
12
Use the distributive property to solve 3 x 4
12
A pizza parlor uses 3 cups of pepperoni for each pizza. There are 3 pizzas in each oven. There are 6 ovens in the pizza parlor. How much cups of pepperoni are used in all?
54 cups of pepperoni
When I multiply by 3s facts, which two smaller facts can I break 3 into? Give an example.
2s and 1s facts
Show one way to break apart an array with 3 rows and 5 in each row
15
8
Use the distributive property to solve 7 x 8
56
$25
When I multiply by 6s facts, which two smaller facts can I break 6 into? Give an example.
4 and 2, 5 and 1, 3 and 3
42
Solve 5 x 2 x 2
20
54
Jasminda organizes her Halloween candy into a 4 x 6 array. How can JR break up her array of candy into two smaller arrays?
(2 x 6) + (2 x 6)
When I multiply by 7s facts, which two smaller facts can I break 7 into? Give an example.
5s and 2s facts
Jake broke an array into one 3 x 4 array and one 5 x 4 array. What was the larger array that Jake started with?
8 x 4
Solve 4 x 6 x 3
72
Use the distributive property to solve 7 x 5
35
4 x 3 x 2
4 x 2 x 3
2 x 3 x 4
3 x 4 x 2
Isaiah makes the generalization that a 10s fact can be broken into two 5s facts. Write two equations to test his generalization.
10 x 2 = (5 x 2) + (5 x 2)
10 x 3 = (5 x 3) + (5 x 3)
Alex broke apart an array into a 2 x 7 and 2 x 2 array. What was the larger array that Alex started with?
2 x 9
Show both ways to solve 5 x 3 x 3
(5 x 3) x 3
5 x (3 x 3) =45
Use the distributive property to solve 7 x 9. Show two ways to solve.
63
Carter has 3 bags of Halloween candy. There are 9 pieces of candy in each bag. How much candy does Carter have?
27 pieces of candy
7 x 8 = (5x 8)+ (2 x 8) = 40 + 16 = 56
7 x 6 = (5 x 6) + (2 x 6) = 30 + 12 = 42
What generalization can we make?
She can break 7s facts into 5s facts and 2s facts
Kira wrote the following equations: (4 x 5) + (4 x 3). What was the equation that she broke into two smaller known facts?
4 x 8