Estimate!
Powers of 10
Dividing a whole number by a decimal
Dividing a decimal by a whole number
Dividing a decimal by a decimal
100

Estimate the quotient for 


21.4 ÷ 6.9

21 ÷ 7 = 3

100

8.373 ÷ 101 = ?

0.8373

100

A candle burns 0.25 inch per hour. How long will it take a 15-inch candle to completely burn?

It will take the 15-inch candle 60 hours to burn completely. 

100

Jaden has $1.20. He was able to buy 6 gumballs with all his money. How much did each gumball cost?

Each gumball cost $0.20.

100

Joe ran 4.8 miles total. If he ran 1.2 miles each day, how many days did he go running?

He went running 4 days. 

200

Where does the decimal point in the quotient belong? 

140.25 ÷ 5 = 2 8 0 5

28.05

200

Jacob has a jar full of dimes. The total amount of money in his jar is $45.60. How many dimes does he have?

He has 456 dimes. 

200

Jonny has eight dollars. If each CD costs $0.25, how many CD's can Jonny buy?

Jonny can buy 32 CD's. 

200

Ella spends $1.20 on cupcakes. If she bought 12 cupcakes, how much did each cupcake cost?

Each cupcake cost $0.10.

200

Barbaera the Barbarian has $8.10 to spend. She wants to buy swords that cost $0.09. How many swords can she buy?

She can buy 90 swords. 

300

Estimate the quotient of 42 ÷ 2.8

42 ÷ 3 = 14

300

Use mental math to find the quotient of

567.8 ÷ 100

5.678

300

Tod wants to buy erasers and he only has $12. If each eraser costs $0.10, how many erasers can he buy?

Tod can buy 120 erasers. 

300

Dinosaur Doug has $14.40. He wants to split it with twelve different people. How much money will each person get?

Each person will get $1.20.

300

Barbara spent $5.60 on markers. If each marker costs $0.70, how many markers did she buy?

She bought 8 markers. 

400

Alex and his three friends purchased a snow blower to share. If the snow blower costs $439.20, about how much will each person pay?

$440 ÷ 4 = $110

Each friend will pay about $110.

400

If Cody says that 6453.4 ÷ 103 = 64.534, but Samantha says that 6453.4 ÷ 103 = 6.4534. Who is correct and why?

Samantha is correct because 103 is the same as saying you are dividing by 1000. Therefore, the decimal would have to move to the left 3 places. 

400

Joseph is weaving a ceremonial Native American sash. The sash will be 8 feet long when it is completed. Joseph wants to add a diamond shape every 0.4 feet along the sash. How many diamonds will the sash have when it is completed?

The sash will have 20 diamonds when it is finished.

400

Jay and his four friends bought a batch of cookies that cost $2.50. If they split the cost evenly, how much will each person pay?

Each person will pay $0.50.
400

Bugs Bunny can run 5.20 miles in an hour. He stops to eat a carrot every 0.04 miles. How many carrots does Bugs Bunny eat?

He can eat 130 carrots in an hour. 

500

Mauricio scored a total of 34.42 points in five gymnastics events. Which number sentence shows how you would estimate Mauricio's average score?

a. 35 ÷ 5 = 7

b. 30 ÷ 10 = 3

c. 35 ÷ 7 = 5

d. 40 ÷ 10 = 4

a. 35 ÷ 5 = 7

500

In which of the following equations does n=10?

a. 1946.8 ÷ n = 1.9468

b. 61.5 ÷ n = 0.615

c. 11.73 ÷ n = 0.01173

d. 4.12 ÷ n = 0.412

b. 61.5 ÷ n = 0.615

500

Madelena is making six personal pizzas. If she expects 1.5 pizzas to serve 1 friend. How many friends can she share with if she wants to eat pizza as well?

She can share with 3 friends if she is eating too. For a total of 4 people eating pizza. 

500

Jeff spent $2.40 on chewy jolly ranchers. If he bought 6 chewy jolly ranchers, how much did each jolly rancher cost? 

Each jolly rancher cost $0.40. 

500

Sophia and Kacey went to Little Cesars. Each slice of pizza they bought cost $0.80. If they spent $9.60, how many slices did they buy?

They can buy 12 slices of pizza.