Dividing Decimals by Powers of 10
Estimating Decimal Division
Dividing Decimals by Whole Numbers
Dividing Decimals by Decimals
Problem Solving
100
7.4 ÷ n = 0.74
n = 101
100
Estimate: 40.42 ÷ 4.3
40 ÷ 4 = 10
So, about 10
100
Ted jogged a total of 11.2 miles in 4 days. He jogged the same distance each day. How far did he jog each day?
2.8 miles
100
142.45 ÷ 7.4
19.25
100
Heather buys 12 patio chairs for $366. Each chair costs the same amount. What is the exact cost of each chair?
$30.50
200
3.27 ÷ 100
3.27 ÷ 100 = 0.0327
200
15.48 ÷ 0.72
15 ÷ 1 = 15
15 ÷ 0.5 = 30
So, between 15 and 30
200
What quotient does the model Nestor made represent?
0.81 ÷ 3 = 0.27
200
How many nickels are there in $22? Solve the equation 22 ÷ 0.05 to help you.
440 nickels
200
Heather also buys 12 patio lights for $63. She estimates the cost of each light to be about $5.
She then calculates the actual cost of each light to be $2.40. Explain whether her calculation is reasonable.
Her calculation is not reasonable because she pays more than $60 for the 12 patio lights, which means she pays more than $5 per patio light.
300
Antonio writes the equation 80.4 ÷ d = 0.0804. What value of d makes the equation true?
A. 102
B. 103
C. 104
D. 105
B. 103
300
86.4 ÷ 2.4
86 ÷ 2 = 43
90 ÷ 2 = 45
So, about 43 or 45
300
Lauren builds a sandbox shaped like an octagon. Each side of the sandbox is the same length.
The perimeter of the sandbox is 18.8 feet.
How long is each side of the sandbox?
2.35 ft
300
Kurt buys a box of 96 crayons for $10.56. What is the cost of each crayon in the box?
$0.11
300
The height of 6 pictures placed end to end on a bulletin board is 57 centimeters. All of the pictures are the same height. How tall is each picture?
9.5 cm
400
Shirley bought 20.8 pounds of bird seed at a bargain store. She wants to fill her feeder 100 times
with an equal amount. How much seed should she put in the feeder each time?
0.208 pounds
400
50.31 ÷ 8.6
50 ÷ 10 = 5
48 ÷ 8 = 6
So, about 5 or 6
400
Staci pays $32.70 for 5 cell phone cases. Each case costs the same amount. How much does each case cost?
$6.54
400
Three teachers buy prizes to put in the prize bin at school. Mrs. Maiers spends $7.68 on stickers.
Mr. Lang spends $11.52 on balloons. Mrs. Connor spends $17.64 on pencils. If Mrs. Maiers buys 24 stickers, is the cost of each sticker more than or less than $0.50?
Less than $0.50
The exact cost is $0.32400
Lauren builds a sandbox shaped like an octagon. Each side of the sandbox is the same length. The perimeter of the sandbox is 18.8 feet. The total cost of sand to fill the sandbox is $59.48. Lauren and 3 friends divide the cost equally. How much does each person pay?
$59.48 ÷ 4 = $14.87
500
Which expression is equivalent to 7.6 ÷ 10?
A. 760 ÷ 100
B. 0.76 ÷ 100
C. 7,600 ÷ 104
D. 7.6 ÷ 102
E. 0.076 ÷ 10
C. 7,600 ÷ 104
500
Heather buys 12 patio chairs for $366. Each chair costs the same amount. Which equation represents the best estimate for the cost of each chair?
A. $350 ÷ 5 = $70
B. $360 ÷ 12 = $30
C. $400 ÷ 10 = $40
D. $400 ÷ 20 = $20
B. $360 ÷ 12 = $30
500
Brett's music teacher spent $134.30 on 17 song books. What is the cost per book?
$7.90
500
Ian uses 4.2 feet of ribbon to wrap each present. How many presents can he wrap with 5.6 yards of ribbon. (Remember: There are 3 feet in a yard.)
4 presents
500
Jamal uses 7.56 liters of milk to make milkshakes for him and 11 friends. Each milkshake uses the same
amount of milk. How much milk is in each milkshake?
0.63 liters