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Conversions
Applications
Interest
Percentage Change
Finding a Percentage of a Quantity
100
Convert 0.6 to a percentage
60%
100

You get a 20% discount on a t-shirt that has a marked price of $100. How much did you pay?

$80

100

You put $100 in a savings account that earns 3% interest per year. How much money do you earn in interest after 1 year?

$3

100
Increase 100 by 10%
110
100
30% of 100
30
200
Convert 1/10 to a percentage
10%
200

You decide to donate 10% of your allowance to a charity. If your allowance is 50 a month, how much will you donate?

$5

200

Jan earns 5% interest on her savings account each month. If she has $200 in her account, how much money in interest will she earn after 4 months?

200 * 0.05 * 4=10 

10 * 4 = $40

200
Decrease 90 by 10%
81
200
10% of 90
9
300
Convert .04 to a percentage
4%
300

A microwave cost $75, but it is on sale for 40% off. What is the sale price?

$45

300

Raj's puts $4000 in the bank. His money earns 2.5% interest each year. How much money does Raj have in the bank after 2 years?

$4200

300
Increase 10 by 35%
13.5
300
50% of 300
150
400
Convert 2/5 to a percentage
40%
400

A bag had 80 marbles in it. There are 20 green marbles, 30 blue marbles, 10 yellow marbles, and 20 purple marbles. What percentage of the bag is purple marbles?

25%

400
Juanita earns a salary of $40,000 per year. In addition, she earns a 2% commission on all paper products she sells. If Juanita sells $100,000 worth of paper products each year, then how much does she make total per year?
$42,000
400
Decrease $5 by 15%
$4.25
400
3% of 7
.21
500
Convert 123.5% to a decimal
1.235
500

In order to borrow enough money to buy the home she chose, Sally needed to have 28% of the cost of the home. If the home cost $425,000, how much did she need to have?

$119,000

500

Cassi has money in a savings account that grows 1.5% every year.

Write an equation to represent the money in her account as it grows from one year to the next.

Use x for this year's amount and y for next year's amount.

y = 1.015x

500
Increase $70 by 42%
$99.4
500
8% of 1600
128