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Add/Subtract Decimals
Multiply/Divide Decimals
Converting between Decimal and Percent
% of a Number
Word Problems
100

4.75 + 3.20

7.95

100

1.8 · 5

9

100

What is .75 as a percent?

75%

100
65% of 84?
What is 232.61.
100

A music collector has 1200 CD's and 65% of them were produced after 1990. How many of the cds were produced after 1990?

780 CD's

200

9.85-6.50

3.35

200

7.2 ÷ 3

1.2

200

What is 87% written as a decimal?

.87

200
70% of 245?
What is 171.50.
200

Your class surveyed 560 students and asked what kind of community service activity they prefer. Of the students surveyed, 25% chose recycling. How many students chose recycling?

140 students.

300

20.48 + 4.39

24.87

300

12.06 · 0.8

9.648

300

What is 2% written as a decimal? 

0.02
300
60% of 240?
What is 144.
300

A school newspaper says that 3 students, or 6% of the students surveyed, can wiggle their ears. How many students were surveyed?

What is 50 students.

400

54.23-12

42.23

400

1.006 · 4

4.024

400

What is 0.375 written as a percent? 

37.5% or 38% (if you rounded) 

400
8.5% of 100?
What is 8.5.
400

Last month a restaurant charged $12.95 for a seafood pasta dinner. This month, the owner had new menus printed, with all dinner prices increased by 12%. What is the new price for a seafood pasta dinner?

$14.50?

500

732.437-612.4628

119.9742

500

5.94 ÷ 1.1

5.4

500

What is .0061 written as a percent? 

0.61% 

500
93.75% of 48?
What is 45.
500

A sweater is being sold at an auction. The minimum bid is $9. At the end of the auction, the sweater is sold for 75% above the minimum bid. What is the selling price of the sweater?

$15.75.