Multiply by Multiples of 10, 100, and 1,000
3 x 70
What is 210?
2 x 287
What is 600?
Use the distributive property to solve each product:
509 x 7
What is
(500 + 9) x 7
(500 x 7) + (9 x 7)
3,500 + 63
3,563?
5 x 18
What is
5 x ( 2 x 9 )
(5 x 2) x 9
10 x 9
90
Solve using the arrays partial products.
4 x 22
What is:
_______ _ _
_______ _ _
_______ _ _
_______ _ _
88?
4 x 2,000
What is 8,000?
9 x 620
What is 5,400?
Use the distributive property to solve each product:
4 x 47
(40 + 7) x 4
(40 x 4) + (7 x 4)
160 + 28
188?
Use mental math strategies to solve each product:
4 x 325
What is
4 x (300 + 25)
(4 x 300) + (4 x 25)
1,200 + 100
1,300
Solve using partial products with addition:
43 x 5
What is
43 x 5 =
15 + 200 = 215?
6 x 400
What is 2,400?
7 x 486
What is 3,500?
Use the distributive property to solve each product:
7 x 86
What is
7 x (80 + 6)
(7 x 80) + (7 x 6)
560 + 42
602?
Each elephant at a zoo eats 100 pounds of hay and 5 pounds of fruits and vegetables every day. How many pounds of food does the zoo need to feed one elephant for one week? Use mental math to solve.
What is
(100 + 5) x 7
(100 x 7) + (5 x 7)
700 + 35
735?
432 x 8
What is
(8 x 400) + (8 x 30) + (8 x 2)
3,200 + 240 + 16
3,456?
8,000 x 6
What is 48,000?
4 x 2,610
What is 12,000?
Use the distributive property to solve each product:
304 x 8
What is
(300 + 4) x 8
(300 x 8) + (4 x 8)
2,400 + 32
2,432?
Find the following expressions that shows how to use mental math to find the product of 4 x 27.
a. (4 x 20) + (4 x 7)
b. 4 x (20 x 7)
c. (4 x 25) + (4 x 2)
d. 4 x 2 x 7
What is a. and c. ?
Solve using the partial products with a box:
532 x 9
What is:
900 x 8
What is 7,200?
5 x 8,329
What is 40,000?
Use the distributive property to solve each product:
4 x 731
What is
4 x (700 + 30 + 1)
(4 x 700) + (4 x 30) + (4 x 1)
2,800 + 120 + 4
2,924?
7 x 312
What is
7 x (300 + 12)
(7 x 300) + (7 x 12)
2,100 + 84
2,184
Solve using the standard algorithm:
572 x 6
What is 3,432?