Number and Operations in Base Ten
5.NBT.2, 5.NBT.7
eHelp
Copy
right
© T
he M
cGra
w-H
ill Co
mpa
nies
, Inc
.
Name
Need help? connectED.mcgraw-hill.com
Lesson 6
Multiply Decimals by Powers of Ten
PracticeMultiply.
1. 0.13 × 10 = 2. 1.4 × 1,000 =
3. 4.81 × 103 = 4. 0.72 × 102 =
5. 0.179 × 1,000 = 6. 67.2 × 101 =
Homework Helper
Find 0.35 × 100.
One Way Multiply.
0.35× 100
0000000
+ 350035.00
Another Way Move the decimal point.
Multiplying a decimal by 100 moves the decimal point two places to the right.
0.35 35
So, 0.35 × 100 = 35.
The non-zero digits are the same. The decimal point in the product moved two places to the right.
4,810 72
1.3 1,400
179 672
Program: GMH CCM Component: SEPDF Pass
Vendor: Quad Graphics Grade: 5
Lesson 6 My Homework�415
0415_0416_Gr5_S_C06L6HW_115024.indd 4150415_0416_Gr5_S_C06L6HW_115024.indd 415 8/29/11 2:30 PM8/29/11 2:30 PM
Copy
right
© T
he M
cGra
w-H
ill Co
mpa
nies
, Inc
. In
gram
Pub
lishi
ng/S
uper
Stoc
k
Problem SolvingFor Exercises 7 and 8, use the table which shows a
school store’s prices.
7. How much would it cost to buy 10 pens from the school store?
8. How much will it cost for 10 pencils and one notebook?
9. The school purchased 100 trophies to give to the honor roll students. If one trophy costs $4.32, how much would it cost for all of the trophies?
10. 3 Find the Error Rico is finding 7.5 × 100. Find and correct his mistake.
7.5 × 100 07.5 = 0.075
Test Practice 11. Elyse is cutting strips of paper for a scrapbook page. Each strip is
1.5 centimeters wide. How wide will 10 strips of paper be?
A 1.5 centimeters C 150 centimeters
B 15 centimeters D 1,500 centimeters
Item PriceNotebook $1.25Pencil $0.50Binder $2.15Pen $0.80
$432
$6.25
$8
Sample answer: He moved the decimal point to the left instead of
the right. The correct answer is 750.
Program: GMH CCM Component: SEPDF Pass
Vendor: Quad Graphics Grade: 5
416�Need more practice? Download Extra Practice at connectED.mcgraw-hill.com
0415_0416_Gr5_S_C06L6HW_115024.indd 4160415_0416_Gr5_S_C06L6HW_115024.indd 416 8/30/11 5:56 PM8/30/11 5:56 PM
