Decimals
give me a
rash!
© Created by Mike’s Math Mall
CCSS : 5.NBT.B.7 for Multiplying and Dividing Decimals
Practice Pages
Practice A – Multiplying Decimals
Practice B – Multiplying Decimal Word Problems
Practice C – Multiplying Decimals’ Decoder Puzzle
Practice D – Dividing Decimals
Practice E – Dividing Decimal Word Problems
Practice F – Dividing Decimals’ Decoder Puzzle
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4
5
6
7
8
Quizzes
Quiz A – Multiplying Decimals
Quiz B – Dividing Decimals
9
10
Practice Page Answer Keys
Practice A Answers
Practice B Answers
Practice C Answers
Practice D Answers
Practice E Answers
Practice F Answers
11
12
13
14
15
16
Quiz Answer Keys
Quiz A – Multiplying Decimals
Quiz B – Dividing Decimals
17
18
Notes/Anchor Charts
Multiplying Decimals
Dividing with Decimal in Dividend
Dividing with Decimal in Divisor
19
20
21
PowerPoint Presentation
27-slide, 2-part, Interactive Lesson
©Mike’s Math Mall
See
PPT File
2
Name______________________________________
Date___________________
Multiplying Decimals
Practice A
True or False.
1)
T or F When multiplying two numbers with decimals, the decimal points must
be lined up before you multiply.
2)
T or F To place a decimal in the product, you count places from right to left.
3)
T or F If 5.78 × 10.91 = 630598, the decimal should be placed between the
0 and 5 (assume the product is correct).
Multiply.
4)
0.8
× 8
×
4.4
2.3
×
71.59
0.18
8)
12)
15)
5)
5
× 0.7
9)
×
6)
0.59
0.75
11
× 0.4
7)
218
0.6
11)
10)
×
13)
×
22.84
2.63
14)
2.6
× 0.2
1,000
× 0.33
916.8 × 0.0009
School lunches cost $11.25 per week. How much did it cost Jenna for the
school lunch after 16.5 weeks of school? (round answer to the nearest penny)
________________________________________________________________________________________________
©Mike’s Math Mall
3
Name______________________________________
Date___________________
Multiplying Decimals
Practice B
Solve the following problems. Round answers to the nearest penny when necessary.
1) Jackson earned $8.75 per hour working after school on a mowing crew. If he
worked 21 hours this month, how much did he earn altogether?
_____________________________________________________________________________________________________
2) Kayla’s motor scooter gets 50.35 miles per gallon of
gasoline. If her gas tank holds 4.3 gallons of gas, how
many miles can she travel after using a full tank? (round
to the nearest tenth of a mile)
_________________________________________________________________________
3) It costs the Barker family $95.49 a month to feed their two Great Dane dogs.
How much will it cost them for 6.5 months of food?
_____________________________________________________________________________________________________
4) a. Nick and Wes hiked the entire Appalachian Trail in just
under five months. The boys averaged 14.37 miles per day
for 150.9 total days. How long is the Appalachian Trail?
(round to nearest mile)
______________________________________________________________
b. If it costs $1.55, on average, for each mile hiked on the
trail, how much does it cost each hiker to hike the entire
Appalachian Trail?
______________________________________________________________
5) There are 2.54 centimeters in one inch. How many centimeters are there in
64.5 inches?
_____________________________________________________________________________________________________
©Mike’s Math Mall
4
Name__________________________________________ Date____________________
Multiplying Decimals
Practice C
Multiply the following decimals to help you decode the puzzle below. Number 1 has been completed
for you.
1)
28
× 0.3
2)
5.4
× 0.7
3)
0.21
× 6.41
4)
13.6
× 0.8
778.2
×
0.6
6)
30.6
× 0.35
7)
41
0.1
8)
0.69
× 12.8
4.05
×
2.9
10)
12)
33.02
× 0.67
8.4
5)
9)
13)
×
0.4
× 15
11.4 × 1.8 =___________________
11)
9.3
× 1.8
14)
0.756 × 24.9 =___________________
Code Bank
4.1 = H
3.78 = G
466.92 = M
8.832 = U
10.88 = V
6=D
10.71 = L
8.4 = R
1.3461 = C
22.1234 = B
16.74 = E
18.8244 = S
11.745 = I
20.52 = A
Why does Sparky appear so spastic?
__ __ __ __ __ __ __
12 11 3 13 8 14 11
__ __ __ __ __ __ __ __
10 11 3
9
5 13 6 14
__ __ __
7
©Mike’s Math Mall
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5
__
13
__ __ __ __
2
9
4 11
__
R __ __ __!
1 13 14 7
5
Name______________________________________
Date___________________
Dividing Decimals
Practice D
True or False.
1)
T or F The number underneath the division box is called the divisor.
2)
T or F The answer to a division problem is called the quotient.
3)
T or F When dividing 0.77 9.43 , step 1 is to move the decimal that is
between the 9 and 4 up onto the division box.
Divide.
4) 4 2.6
8) 4 45.6
12) 0.2 6.2
5) 6 0.9
9)
5 14.85
13) 0.16 3.32
16) 9.165 ÷ 5 =____________________
©Mike’s Math Mall
6) 3 3.7
7) 6 5.82
10) 10 379.3
11) 15 40.08
14)
17)
3.2 5.68
15) 0.09 1.99
23.14 ÷ 0.5 =____________________
6
Name______________________________________
Date___________________
Dividing Decimals
Practice E
Solve the following problems. Round answers to the nearest penny when necessary.
1) Last week, Allison earned $86.64 at her part time job painting fire hydrants. If
she worked a total of 12 hours last week, how much does she earn per hour?
_____________________________________________________________________________________________________
2) The Wilson’s RV can travel a total of 522.8 miles on one
tank of gas. If the RV has a 40 gallon tank, how many
miles does the camper get for every one gallon of gas?
_________________________________________________________________________
3) The 6-member Hope family spent the evening at Chicago’s Wrigley Field to enjoy
a night of food, fun, and baseball. The total cost for the evening was $447.74. On
average, how much did it cost each member of the family to attend the game?
_____________________________________________________________________________________________________
4) a. A giant 10 pound lobster was caught off the coast of
Maine. The lobster sold at market for a total of $92.95.
What did the lobster cost per pound?
______________________________________________________________________________
b. A lobsterman brought in 9 pounds of lobster from one of
his traps. If he earned a total of $48.87 for that catch, how
much did he earn for each pound of lobster caught?
______________________________________________________________
5) A member of the school cross country team ran a total of 76.5 miles in 12.5
days. How many miles did the runner average per day?
_____________________________________________________________________________________________________
©Mike’s Math Mall
7
Name__________________________________________ Date____________________
Dividing Decimals
Practice F
Divide the following decimals to help you decode the puzzle below. Number 1 has been completed
for you.
0.55
2) 5 0.6
1) 8 4.4
5) 3 96.3
6) 14 28.42
9) 0.4 34.7
10) 1.2 1.7
3) 9 1.3
7)
4) 6 0.852
8)
6 5.586
11) 0.06 36.2
13) 3.42 ÷ 4 =____________________
2 111.7
12) 0.22 6.64
14) 94.92 ÷ 0.7 =___________________
Code Bank
0.142 = D
0.12 = I
32.1 = N
55.85 = F
603.3 = H
0.55 = L
0.855 = R
135.6 = U
30.18 = C
1.416 = T
0.931 = A
2.03 = S
86.75 = O
0.14 = E
What is Sparky trying to remember?
__ __ __
10 11 3
__ __
9
8
__ __ __
L __ __
12 9
1
9 13
__ __ __
11 2
6
__ __ __ __ __ __ __ __ __ __ __ __ __
14 5
©Mike’s Math Mall
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3 13 12 14 13 10 7
2
5
6
8
Name______________________________________ Date____________________
Multiplying Decimals
Quiz A
True or False.
1)
T or F When multiplying decimals, the first step is to move decimals to the
right until you create whole numbers.
2)
T or F To place a decimal in the product, you count places from left to right.
3)
T or F If 4.38 × 7.97 = 349086, the decimal should be placed between the
4 and 9 (assume the product is correct).
Multiply.
4)
0.6
× 6
8)
×
12)
14)
8.1
3.2
3.56 × 5.2
5)
4
× 0.5
9)
×
0.45
9.1
6)
10)
13)
12
× 0.7
7)
623
× 0.72
11)
9.3
× 0.2
×
2.88
0.54
10.918 × 47
Allen needs a new, heavy-duty chain for his tree removal service. If one foot
of chain cost $4.99, how much will a 20.5 feet of chain cost him?
(round answer to the nearest penny)
________________________________________________________________________________________________
©Mike’s Math Mall
9
Name______________________________________
Date___________________
Dividing Decimals
Quiz B
True or False.
1)
T or F The number underneath the division box is called the dividend.
2)
T or F The answer to a division problem is called the product.
3)
T or F When dividing 0.84 3.95 , step 1 is to move the decimal that’s
in front of the 8 two places to the right.
4) 2 7.8
5) 4 0.34
6) 11 1.826
7) 8 54.64
8) 0.3 11
9) 0.04 0.84
10) 0.7 283.71
12)
11) 0.22 8.184
The soccer team bought new uniforms for $649.62. If there are 12 kids on
the team, how much did each uniform cost? (round answer to the nearest penny)
________________________________________________________________________________________________
©Mike’s Math Mall
10
Name______________________________________
Date___________________
Practice A
Answers
Multiplying Decimals
True or False.
1)
T or F When multiplying two numbers with decimals, the decimal points must
be lined up before you multiply.
2)
T or F To place a decimal in the product, you count places from right to left.
3)
T or F If 5.78 × 10.91 = 630598, the decimal should be placed between the
0 and 5 (assume the product is correct).
Multiply.
4)
8)
12)
15)
0.8
× 8
6.4
4.4
× 2.3
10.12
71.59
×
0.18
12.8862
5)
9)
5
× 0.7
3.5
0.59
× 0.75
0.4425
13)
6)
10)
22.84
×
2.63
60.0692
11
× 0.4
4.4
7)
218
×
0.6
130.8
11)
14)
2.6
× 0.2
0.52
1,000
× 0.33
330
916.8 × 0.0009
0.82512
School lunches cost $11.25 per week. How much did it cost Jenna for the
school lunch after 16.5 weeks of school? (round answer to the nearest penny)
It will cost Jenna $185.63.
________________________________________________________________________________________________
©Mike’s Math Mall
11
Name______________________________________
Date___________________
Multiplying Decimals
Practice B
Answers
Solve the following problems. Round answers to the nearest penny when necessary.
1) Jackson earned $8.75 per hour working after school on a mowing crew. If he
worked 21 hours this month, how much did he earn altogether?
Jackson will earn $183.75.
_____________________________________________________________________________________________________
2) Kayla’s motor scooter gets 50.35 miles per gallon of
gasoline. If her gas tank holds 4.3 gallons of gas, how
many miles can she travel after using a full tank? (round
to the nearest tenth of a mile)
Kayla can travel 216.5 total miles.
_________________________________________________________________________
3) It costs the Barker family $95.49 a month to feed their two Great Dane dogs.
How much will it cost them for 6.5 months of food?
It will cost the Barkers $620.69 to feed the dogs.
_____________________________________________________________________________________________________
4) a. Nick and Wes hiked the entire Appalachian Trail in just
under five months. The boys averaged 14.37 miles per day
for 150.9 total days. How long is the Appalachian Trail?
(round to nearest mile)
The Appalachian Trail is 2,168 miles long.
______________________________________________________________
b. If it costs $1.55, on average, for each mile hiked on the
trail, how much does it cost each hiker to hike the entire
Appalachian Trail?
It costs about $3,360.40 to hike the entire trail.
______________________________________________________________
5) There are 2.54 centimeters in one inch. How many centimeters are there in
64.5 inches?
There are 163.83 cm in 64.5 in.
_____________________________________________________________________________________________________
©Mike’s Math Mall
12
Name__________________________________________ Date____________________
Multiplying Decimals
Practice C
Answers
Multiply the following decimals to help you decode the puzzle below. Number 1 has been completed
for you.
1)
28
× 0.3
2)
778.2
×
0.6
6)
8.4
5)
4.05
×
2.9
11.745
13)
3)
30.6
× 0.35
7)
3.78
466.92
9)
5.4
× 0.7
4)
41
0.1
8)
1.3461
×
10.71
10)
0.21
× 6.41
0.4
× 15
10.88
4.1
6
12)
16.74
20.52
11.4 × 1.8 =___________________
0.69
× 12.8
8.832
9.3
× 1.8
11)
13.6
× 0.8
33.02
× 0.67
22.1234
18.8244
0.756 × 24.9 =___________________
14)
Code Bank
4.1 = H
3.78 = G
466.92 = M
8.832 = U
10.88 = V
6=D
10.71 = L
8.4 = R
1.3461 = C
22.1234 = B
16.74 = E
18.8244 = S
11.745 = I
20.52 = A
Why does Sparky appear so spastic?
__
B __
E __
C __
A __
U __
S __
E
12 11 3 13 8 14 11
__
D __
E __
C __
I __
M __
A __
L __
S
10 11 3
9
5 13 6 14
__
H __
I __
M
7
©Mike’s Math Mall
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5
__
A
13
__
G __
I __
V __
E
2
9
4 11
__
R __
A __
S __!
H
1 13 14 7
13
Name______________________________________
Date___________________
Practice D
Answers
Dividing Decimals
True or False.
1)
T or F The number underneath the division box is called the divisor.
2)
T or F The answer to a division problem is called the quotient.
3)
T or F When dividing 0.77 9.43 , step 1 is to move the decimal that is
between the 9 and 4 up onto the division box.
Divide.
0.65
4) 4 2.6
11.4
8) 4 45.6
31
12) 0.2 6.2
0.15
5) 6 0.9
1.23
6) 3 3.7
2.97
5 14.85
10) 10 379.3
9)
20.75
13) 0.16 3.32
16) 9.165 ÷ 5 =____________________
1.833
©Mike’s Math Mall
37.93
1.775
14) 3.2 5.68
17)
0.97
7) 6 5.82
2.672
11) 15 40.08
22.1
15) 0.09 1.99
46.28
23.14 ÷ 0.5 =____________________
14
Name______________________________________
Date___________________
Dividing Decimals
Practice E
Answers
Solve the following problems. Round answers to the nearest penny when necessary.
1) Last week, Allison earned $86.64 at her part time job painting fire hydrants. If
she worked a total of 12 hours last week, how much does she earn per hour?
Allison earns $7.22 an hour.
_____________________________________________________________________________________________________
2) The Wilson’s RV can travel a total of 522.8 miles on one
tank of gas. If the RV has a 40 gallon tank, how many
miles does the camper get for every one gallon of gas?
The RV only gets 13.07 miles per gallon.
_________________________________________________________________________
3) The 6-member Hope family spent the evening at Chicago’s Wrigley Field to enjoy
a night of food, fun, and baseball. The total cost for the evening was $447.74. On
average, how much did it cost each member of the family to attend the game?
On average, it cost each member of the family $74.62 to attend the game.
_____________________________________________________________________________________________________
4) a. A giant 10 pound lobster was caught off the coast of
Maine. The lobster sold at market for a total of $92.95.
What did the lobster cost per pound?
The lobster cost $9.30 per pound.
______________________________________________________________________________
b. A lobsterman brought in 9 pounds of lobster from one of
his traps. If he earned a total of $48.87 for that catch, how
much did he earn for each pound of lobster caught?
The lobsterman earned $5.43 per pound.
______________________________________________________________
5) A member of the school cross country team ran a total of 76.5 miles in 12.5
days. How many miles did the runner average per day?
The runner averaged 6.12 miles per day.
_____________________________________________________________________________________________________
©Mike’s Math Mall
15
Name__________________________________________ Date____________________
Dividing Decimals
Practice F
Answers
Divide the following decimals to help you decode the puzzle below. Number 1 has been completed
for you.
0.55
0.12
2) 5 0.6
1) 8 4.4
32.1
0.14
3) 9 1.3
2.03
6) 14 28.42
5) 3 96.3
86.75
9) 0.4 34.7
0.931
6 5.586
7)
1.416
10) 1.2 1.7
4)
8)
55.85
2 111.7
30.18
12) 0.22 6.64
603.3
11) 0.06 36.2
13) 3.42 ÷ 4 =____________________
0.855
0.142
6 0.852
14) 94.92 ÷ 0.7 =___________________
135.6
Code Bank
0.142 = D
0.12 = I
32.1 = N
55.85 = F
603.3 = H
0.55 = L
0.855 = R
135.6 = U
30.18 = C
1.416 = T
0.931 = A
2.03 = S
86.75 = O
0.14 = E
What is Sparky trying to remember?
__
T __
H __
E
10 11 3
__
O __
F
9
8
__
C __
O __
L __
O __
R
12 9
1
9 13
__
H __
I __
S
11 2
6
__
U __
N __
D __
E __
R __
C __
U __
R __
T __
A __
I __
N __
S
14 5
©Mike’s Math Mall
4
3 13 12 14 13 10 7
2
5
6
16
Name______________________________________ Date____________________
Multiplying Decimals
Quiz A
Answers
True or False.
1)
T or F When multiplying decimals, the first step is to move decimals to the
right until you create whole numbers.
2)
T or F To place a decimal in the product, you count places from left to right.
3)
T or F If 4.38 × 7.97 = 349086, the decimal should be placed between the
4 and 9 (assume the product is correct).
Multiply.
4)
0.6
× 6
3.6
8)
12)
14)
8.1
× 3.2
25.92
3.56 × 5.2
18.512
5)
9)
4
× 0.5
2
0.45
×
9.1
4.095
6)
10)
13)
12
× 0.7
8.4
7)
623
× 0.72
448.56
11)
9.3
× 0.2
1.86
2.88
× 0.54
1.5552
10.918 × 47
513.146
Allen needs a new, heavy-duty chain for his tree removal service. If one foot
of chain cost $4.99, how much will a 20.5 feet of chain cost him?
(round answer to the nearest penny)
The chain will cost Allen $102.30
________________________________________________________________________________________________
©Mike’s Math Mall
17
Name______________________________________
Date___________________
Quiz B
Answers
Dividing Decimals
True or False.
1)
T or F The number underneath the division box is called the dividend.
2)
T or F The answer to a division problem is called the product.
3)
T or F When dividing 0.84 3.95 , step 1 is to move the decimal that is
in front of the 8 two places to the right.
5)
6.83
7) 8 54.64
8) 0.3 11
36.6
405.3
10) 0.7 283.71
12)
1.66
6) 11 1.826
0.085
4 0.34
3.9
4) 2 7.8
21
9) 0.04 0.84
37.2
11) 0.22 8.184
The soccer team bought new uniforms for $649.62. If there are 12 kids on
the team, how much did each uniform cost? (round answer to the nearest penny)
Each uniform cost $54.14
________________________________________________________________________________________________
©Mike’s Math Mall
18
42.9
× 0.37
3003
+ 12870
15.873
To multiply decimals:
Step 1: Ignore all decimals.
Step 2: Multiply normally.
Step 3: Count all decimal places in the factors
from right to left (add together).
Step 4: In the product, place a decimal point
an equal number of places counted
(from right to left)
©Mike’s Math Mall
19
Vocabulary:
Quotient
Divisor Dividend
Division Box
When a division problem has a decimal in
the dividend, follow these steps:
20. 8 7
4 83.48
-8
34
-3 2
28
-2 8
0
©Mike’s Math Mall
Step 1: Locate the decimal
in the dividend.
Step 2: Move the decimal
straight up onto the
division box.
Step 3: Ignore the decimals.
Step 4: Divide normally.
20
Vocabulary:
Quotient
Divisor Dividend
Division Box
When a division problem has decimals in the
divisor and dividend, follow these steps:
Step 1: Locate the decimal
in the divisor.
Step 2: Move that decimal to the right
until you create a whole number.
4 1. 3 5
0.22 9.0 9 7
Step 3:
Move the dividend
decimal the same number
of places to the right.
Step 4: Move the decimal straight up
onto the division box.
Step 5: Divide normally.
©Mike’s Math Mall
21