Partial Products
Using the partial products strategy, solve 126 x 3= .
126
x 3
18 = 3 x 6
60 = 3 x 20
300 = 3 x 100
378
Albert rode the train 198 round trip 4 times. Explain how to use mental math to find the total distance Albert traveled.
198 is close to 200 so multiply 4 x 200 = 800, then subtract 4 x 2 = 8. 800 - 9 = 972.
972 miles
Create an area model to solve 3 x 312.
See Image 1
Select all the expressions that could be used to find 1,235 x 9.
9 x (1,000 + 200 + 20 + 5)
9 x (1,000 + 200 + 30 + 5)
(9 x 1000) + (9 x 200) + (9 x30) + (9 x 5)
9 x 1,235
9 + 1,235
9 x (1,000 + 200 + 30 + 5)
(9 x 1,000) + (9 x 200) + (9 x 30) + (9 x 5)
9 x 1,235
Using the partial product strategy, solve 8 x 321 = ?
2,568
Mr. Ortiz sells tortillas in bags of 25 and bags of 50. If he sells 4 bags of 50 and 6 bags of 25, how many tortillas did he sell?
350 tortillas
Draw an area model to find 365 x 3.
365 x 3 =?
See Image 2
Using any strategy, find the product of 5 x 1,903=
9,515
8
80
160
1,600
2,400
8
160
2400
Bea's Baker bakes 215 cookies and 45 muffins every hour. How many baked goods are baked in 4 hours?
1,040 baked goods
Draw an area model to solve 4 x 256 = ?
See Image 3
Select all of the expressions have a product of 640.
(6 x 100) + (4 x 10)
9 x 54
60 x 4 x 1
160 x 4
(6 x 100) x (4 x 10)
(6 x 100) + (4 x 10)
160 x 4
What are the partial products of 1,874 x 3?
12
210
2,400
3,000
In 1 month, a deli sells 267 turkey sandwiches. If they sell the same amount of turkey sandwiches every month for 4 months, how many turkey sandwiches do they sell in all?
1,068 turkey sandwiches
Create an area model and solve 9 x 1,477
See Image 4.
Using any strategy, what is the product of 4 x 1,817?
4 x 1,817 = 7,268