Percent Equations
Percent of Change
Discounts
Markups
(Including Sales Tax)
Simple Interest
100

1% of 1

What is 0.01?

100

Bob had 5 books, she lost 2 of them. What is the percent change?

What is 40% decrease?

100

An $100 item that is 10% off.

What is $10?

100

A $10 item, with a 40% markup, with 6.4% sales tax.

What is $10.90?

100

P=$3,000

R=2.4%

T=3 years

What is $3,216?

200

50% of 50.1

What is 25.05?

200

Jo had 300 cows, and he lost 299 of them. What is the percent change?

What is 99.6% decrease?

200

An $79.99 item that is 40% off.

What is $49.99?

200

A $40 item, with a 10% markup, with 6.4% sales tax.

What is $46.56?

200

P=$4,000

R=3.4%

T=4 years

What is $4,544?

300

99% of 99

What is 98.01?
300

Jack had 11 model cars, and his brother stole 4 of them. What is the percent change?

What is 36% decrease?

300

An $49.99 item that is 20% off.

What is $39.99?

300

A $99.99 item, with a 1% markup, with 6.4% sales tax.

What is $107.39?

300

P=$5,432

R=4.4%

T=5 years

What is $6,627.04?

400

123% of 23

What is 28.29?

400

Max had 123 baseball cards, and his mom confiscated 70 of them. What is the percent change?

What is 57% decrease?

400

An $56.78 item that is 35% off.

What is $19.87?

400

A $827 item, with a 12% markup, with 6.4% sales tax.

What is $979.17?

400

P=$1,234

R=5.5%

T=6 years

What is $1,641.22?

500

234% of 383.833

What is 898.16922?

500

BILOBUS had $12,345,679 and his ex wife took $6,000,000 of it. What is the percent change?

What is 48.6% decrease?

500

An $1,234,567.89 item that is 99% off.

What is $12,345.68?

500

A $0.20 item, with a 1% markup, with 6.4% sales tax.

What is $0.21?

500

P=$50

R=10%

T=100 years

What is $550?