Multi-step Multiplication
6 x (8 x 5)
240
Using the strategy Doubling & Halving, solve: 24 x 25 = 12 x ____
50
To find 34 x 9, I find 34 x 10 and remove 1 group of 34
34 x 9 = (34 x 10) - (1 x 34)
A rectangular prism is 4 units long, 5 units wide, and 6 units tall
(4 x 5) x 6 = 120 units cubed
A school club spent $82 on 5 identical notebooks. How much did each notebook cost if the cost is shared equally?
Each notebook cost $16, with $4 left over.
(9 X 4) x 5
180
Using the distributive property, solve: 36 x 14 = 36 x (10 + ____)
4
A rectangular prism has a base that is 16 units long and 7 units wide. It has 5 layers. I multiply the base dimensions first and then multiply by the number of layers.
(16 x 7) x 5
A rectangular prism is 7 units long, 3 units wide, and 8 units tall
(7 x 3) x 8 = 168 units cubed
A teacher spent $95 on 6 identical classroom games. What was the cost of each game if the total cost of split equally?
Each game cost $15, with $5 left over
3 x (7 x 2) + 4 x 5
62
Using the Associative Property, solve: 5 x (6 x 8) = (5 x 6) x ____
8
To find 24 x 15, I double 15 and halve 24
24 x 15 = (15 x 2) x (24 / 2)
A rectangular prism is 12 units long, 5 units wide, and 4 units tall
(12 x 5) x 4 = 240
There are 87 students going on a field trip. Each bus can hold 20 students. How many buses are needed?
5 buses are needed because the 7 remaining students need another bus
2 x (6 x 5) + 3 x (4 x 5)
120
Using the area model, solve: 34 x 45
1,530
To find 42 x 12, I multiply 42 by 10 and 42 by 2, then add the products
42 x 12 = (42 x 10) + (42 x 2)
One layer of a rectangular prism contains 24 unit cubes. The prism has 5 layers. What is its volume?
24 x 6 = 144
A baker has 146 cupcakes. Each box holds 12 cupcakes. How many boxes are needed to pack all the cupcakes?
13 boxes are needed because 2 cupcakes remain after filling 12 boxes
(40 x 18) - (2 x 18)
684
Using the over/under strategy, solve: 99 x 14
1,386
To find 28 x 21, I find 28 x 20 and add 1 group of 28
28 x 21 = (28 x 20) + (1 x 28)
One layer of a rectangular prism contains 36 unit cubes. The prism has 9 layers. What is its volume?
36 x 9 = 324
A collection has 245 tiles. Each row contains 30 tiles. How many complete rows can be made, and how many tiles will be left over?