% -> decimal or fraction
decimal or fraction -> %
% of a Number
% of change
Interest Problems
100

Write 46% as a decimal

0.46

100

Write 0.4 as a percent.

40%

100

What is 40% of 240?

96

100

What is the percent of change if 40 is increased to 50?

25%

100

What is the formula to find Interest?

I=P x r x t

200

Write 225% as a decimal.

2.25

200

Write 1/4 as a percent?

25%

200

What is 12% of 70?

8.4

200

What is the percent of change if 75 is increased to 105?

40%

200

What does P stand for?

What is it measured in?

Principal

$

300

Write 7% as a decimal

0.07

300
Write 1.25 as a percent.

125%

300

What is 84% of 90?

75.6

300

What is the percent of change if 12 is decreased to 6?

50%

300

What does r stand for? What is it measured in? 

rate of interest 

%

400

Write 22% as a fraction in simplest form.

11/50

400

Write 3/5 as a percent?

60%

400

42 is 60% of what number?

70

400

What is the percent of change if 138 is decreased to 100? (Round to the nearest whole percent)

28%

400

What does t stand for? 

What is it measured in?

time

years

500

Write 24% as a fraction in simplest form

6/25

500

Order the numbers from least to greatest.

0.9 ,  91%,  7/8 

7/8 , 0.9 , 91%

500

450% of what number is 90?

20

500

What is the percent of change if 73 is decreased to 61? (Round to the nearest whole percent)

16%

500

Interest=$364 Principal=$1,300 t=7 years

Find the rate (r) in percent.

4%

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