Multiply by Multiples of 10
70 x 60
4,200
Estimate the product: 65 x 34
70 x 30 = 2,100
Use the distributive property to solve 17 x 90
(10 x 90) + (7 x 90) = 900 + 630 = 1,530
21 x 74
1,554
At the Bedminster Township Library, there are 22 shelves of chapter books. If each shelf has exactly 61 books, how many fictions books are there?
1,342 books
50 x 60
3,000
Estimate the product: 96 x 74
100 x 70 = 7,000
Use the distributive property to solve 52 x 20
52 x 20 = (50 x 20) + (2 x 20) = 1,000 + 40 = 1,040
92 x 37
3,404
Andrew goes to football practice for 55 minutes each session. After 25 sessions, about how many minutes will he have practiced?
60 x 30 = about 1,800 minutes
90 x 80
7,200
Estimate the product: 89 x 44
90 x 40 = 3,600
Use the distributive property to solve 80 x 33
80 x 33 = (80 x 30) + (80 x 3) = 2,400 + 240 = 2,640
33 x 52
1,716
If it takes a student 14 minutes to complete the mile run, about how many minutes will it take that student to run 35 miles?
40 x 10 = about 400 minutes .... that's almost 7 hours!
20 x 30
600
Estimate the product: 32 x 27
30 x 30 = 900
Fill in the blanks: 70 x 62 = (70 x ___ ) + (70 x ___)
60, 2
64 x 26 =
1,664
Maddie is studying buffalo. She learns that the average buffalo eats 41 pounds of grass a week. How many pounds of grass does the average buffalo eat in a year (52 weeks)?
41 x 52 = 2,132 pounds of grass
70 x 80
5,600
Estimate the product: 42 x 79
40 x 80 = 3,200
What are the partial products for 90 x 45?
90 x 40 = 3,600
90 x 5 = 450
91 x 87
7,917
Ivanka is planting a massive flower garden for the upcoming Spring. For each square foot of the garden, she plants 35 seeds. The garden is 27 square feet. How many seeds will she plant in all?
35 x 27 = 945 seeds