Power 10 Divide
Power 10 Multiply
Divide
Estimate
Add/Subtract
Multiply
Problem Solving
100

190.9 / 10 

19.09 

100

3.64 x 10

36.4

100

68.5 / 5

13.7

100

Estimate:

15.1/3.1

About 5

100

3.5 + 1.32

4.82

100

0.5 x 4

2

100

You buy a Book for $6 and an ice cream for $1.50. How much change would you get back from a $10 bill?

What is $2.50?

200

40 / 100 

0.4 or 0.40

200

4.761 x 100

476.1

200

169 / 13

13

200

Estimate:

43.27/11

About 4

200

8.1 - 6.3

1.8

200

0.8 x 0.7

0.56

200

You buy 3 portions of fancy cheese fries for your classmates for $33.96. How much does one portion of fries cost? 

$11.32

300

100/10

10

300

536.7 x 10

5367

300

3.22 / 1.4 

2.3

300

Estimate:

5.64 * 3

About 18

300

5.06 + 16.25

21.31
300

35 x 0.3

10.5

300

4 bags of gummy worms cost $1 each and 5 bags of Takis cost $0.80 each. How much would you need to pay in total to buy all of the items?

What is $8?

400

308.9 / 100

3.089

400

0.09 x 100

9

400

2,010 / 134

15 

400

Estimate:

89.03/9.4

About 10

400

20 - 9.41

10.59

400

0.32 x 0.2

0.064

400

Mrs. Seles had $140 to spend at the store. She spent $45.60 on new pencils. She spent $13.99 on a new sharpener. How much money does Mrs. Seles have left? 

$80.41

500

5,678.987 / 10

567.8987

500

0.409 x 1,000

409

500

2.4 / 0.4

500

Estimate: 1,145 x 34 



1,000 x 30 = about 30,000

500

13.202 - 8.939

4.263

500

1.2 x 5.5

6.6

500

You can buy either 6 packs of hair beads for $9 or 16 packs of hair beads for $24. Which offer is the better buy (or the unit rate)?

They are the same price per pack, so it doesn’t matter!