Multiplying by 10's
10x88=
880
47x18=
846
Estimate: 91x10=
900
A bookstore sold 54 copies in a month. If they sold the same each month, how many would they sell in two years?
1,296 books
69x10=
690
72x24=
1,728
Estimate 43x37=
1,600
Book A sold 152 books in one month. Book B sold 54 books in one month. How many more books does book A sell in one year than book B?
1,176 Books
90x73=
6,570
36x11=
396
Estimate: 43x82=
3,200
If a book sells for $13 for each copy. How much money would you make if you sold 83 copies?
$1,079
80x54=
4,320
44x15=
660
Estimate: 46x82=
4,000
The average person eats 60 hot dogs per year. Rita is 86 years old. About how many hot dogs would she have eaten during her lifetime?
5,400 Hot Dogs.
48x30=
1,440
65x46=
2,990
Estimate: 34x42=
1,200
The school is buying new art supplies for each of the 16 classes. The art supplies cost $88 per class. About how much will the school spend on new art supplies?
$1,800