Multiply Powers of 10
Estimate
Find the Product
Multiplication & Decimals
100
48,920 x 101 =
48,920
100
Define "estimate"
rounding
100
Define "product"
the result of two or more numbers when multiplied together
100
Define "shifting"
Shifting is moving the decimal place to the right or the left in the product
200
75 x 10,000 =
750,000
200
12 x 0.37 =
4
200
Define "decimal"
a number that consists of a whole and a fractional part
200
0.4 x 0.5 =
0.2
300
0.3 x 10 =
3
300
$2.15 x 16 =
$30 or $40
300
64.2 x 20 =
1,284 or 1,284.0
300
Create and shade a hundredths grid to solve this equation: 0.2 x 0.5 =
400
0.482 x 103 =
482
400
33.05 x 200 =
6,000
400
Find the exact product. Then check the answer using estimation. 19.1 x 8.5 =
162.35 AND 171
400
Use the grid to find the product.
0.4 x 0.6 = 0.24
500
1.24 x 104 =
12,400.
500
Joseph buys a pair of shorts for $17. 95. He also buys 4 T-shirts that are $12.50 each. How much money does he spend in all?
$68
500
Michelle bought 3.6 yards of fabric. Each yard of fabric costs $3.95. How much did she spend in all? Do not estimate to solve.
$14.22
500
Julie is making soup. She needs 2.2 pounds of celery, 3.5 pounds of potatoes, and 4 pounds of beef.
Celery: $2.40
Potatoes: $3.90
Beef: $6.99
How much money does she spend in all?
$46.89 or $50 or $47