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Percents
Percent Change
Simple Interest
Compound Interest
Mixed Scenarios
100
The formula for finding a percent
What is is/of=%/100
100
The formula for finding percent change
What is old-new/old x 100
100
The formula for finding simple interest
What is I=prt
100
The formula for finding compound interest
What is A=p(1+r/n)^nt
100

The Jacobs family leaves a 15% tip on a $45 lunch bill. How much did they pay all together?

$51.75

200
15% of 20?
What is 3
200
Old Price:$17.00 New Price:$12.00
What is 29% decrease
200
$215.00 at 14% per year for 2 years
What is $60.20
200
A=? P=8000 R=0.25 N=24 T=5
What is A=27742.80
200

Tricia is a Realtor and sells a house for $450,000. She receives a commission of 3%. How much money does she make?

$13,500

300
30% of 158
What is 47.4
300
Old Price:$12 New Price:$18
What is 50% increase
300
$30.00 at 8% per year for 3 years
What is $7.20
300
A=? P=74000 R=0.15 N=17 T=4
What is A=134482.42
300

The Mack family bought their home for $210,000 and sold it for $375,000. What was the percent change between the purchase price and sale price?

78.6% increase

400
75% of 94
What is 70.5
400
Old Price:$9 New Price:$15
What is 66.7% increase
400
$60.00 at 62% per year for 4 years
What is $148.80
400
A=? P=17000 R=.40 N=21 T=3
What is A=55808.59
400

Ann opens a saving account with a deposit of $670. She will earn 1.5% interest each year on her money. How much interest will she earn over a period of 10 years? (assuming she does not add or take out any money).

Therefore, the interest to be paid by Dave is $157.5, and the total amount altogether is $1657.5

500
50% of 600
What is 300
500
Old Price:$14 New Price:$8
What is 42.9% decrease
500
$113.64 at 79% per year for 5 years
What is $448.88
500
A=? P=4000 R=0.35 N=19 T=6
What is A=32046.45
500

If you deposit $4000 into an account paying 6% annual interest compounded quarterly, how much money will be in the account after 5 years? 


After 5 years there will be $5387.42 in the account.