Sometimes percents are used to find how much an amount increased. The price of a pair of boots
increased in price from $64 to $80. What was the percent of increase?
Step 1
Subtract to find the amount of increase.
80
- 64
16
original amount
amount of change (increase)
Step 2
Find the percent of increase using a
proportion box.
Amount
Of
Change
Original
Amount
1.) A $20 watch was increased to $25.
%
The percent of
increase is _____%
100
5.) Sam bought a snake at the pet store. It was 3
inches long. After six weeks, the snake measured
12 inches long. The snake increased in length by
what percent?
The percent of increase was _______.
2.) A doctor’s office call increased from $40 to
$52.
The percent of increase was _______.
6.) Mr. Krogman usually prices the umbrellas in his
store at $8 each. However, on rainy days, he
increases the price by 75%. How much does he
charge for an umbrella on rainy days?
The percent of increase was _______.
3.) The tree in my yard grew from 2 feet to 5 feet in
one year.
The rainy day price is _______.
The percent of increase was _______.
7.) Jerold’s weekly pay rate is $865. He receives a
25% pay raise. How much is Jerold’s new
weekly pay rate?
4.) After eating junk food all day, Jeremy’s weight
increased from 150 pounds to 165 pounds.
Jerold’s new weekly pay rate is ______
The percent of increase was _______.
Sometimes percents are used to find how much an amount decreased. The price of a wheelbarrow
decreased from $90 to $72. What was the percent of decrease?
Step 1
Subtract to find the amount of decrease.
90
- 72
18
original amount
Amount
Of
Change
%
amount of change (decrease)
Step 2
Find the percent of decrease using a
proportion box.
Original
Amount
8.) The price of the calculator decreased from $20
to $18.
100
The percent of
decrease is _____%
12.) Mrs. Harper started the year with 25 students
in her class. She now has 20 students. What
is the percent of change?
The percent of decrease was _______.
The percent of decrease was _______.
9.) The price of a jacket decreased from $120 to
$60.
13.) Shell Oil charges $3 per gallon of gas during
the week. On the weekends, the price
decreases 15%. How much do they charge
for a gallon of gas on the weekends?
The percent of decrease was _______.
10.) A radio that sold for $50 was reduced to $35.
What was the percent of decrease?
The weekend price is _______.
The percent of decrease was _______.
11.) Eric had $200 in his savings account. After
buying a video game, he now has $150. What
is the percent of decrease?
The percent of decrease was _______.
14.) Amelia pays $480 per month on her truck
payment. The car dealer promised her that if
she trades it in for a new (smaller) car, she will
save her 30% each month. How much is
Amelia’s new car payment?
The new car payment will be _______.
1.) A $50 jacket was increased to $75.
The percent of increase was _______.
2.) A vet’s office call increased from
$60 to $72.
The percent of increase was _______.
3.) After eating pizza and ice cream all day,
Kathi’s weight increased from 80 pounds
to 90 pounds.
The percent of increase was _______.
4.) The rose bush in my yard grew from 4 feet
to 10 feet in 3 months year.
The percent of increase was _______.
5.) Alex bought a fish at the pet store. It was
2 inches long. After six weeks, the fish
measured 7 inches long. The fish
increased in length by what percent?
The percent of increase was _______.
6.) On Thursday, 30 students went to afterschool tutoring. On Friday, the number of
students increased by 20%. How many
students attended tutorials on Friday?
_______ students attended tutorials.
1.) A $50 jacket was increased to $75.
The percent of increase was _______.
2.) A vet’s office call increased from
$60 to $72.
The percent of increase was _______.
3.) After eating pizza and ice cream all day,
Kathi’s weight increased from 80 pounds
to 90 pounds.
The percent of increase was _______.
4.) The rose bush in my yard grew from 4 feet
to 10 feet in 3 months year.
The percent of increase was _______.
5.) Alex bought a fish at the pet store. It was
2 inches long. After six weeks, the fish
measured 7 inches long. The fish
increased in length by what percent?
The percent of increase was _______.
6.) On Thursday, 30 students went to afterschool tutoring. On Friday, the number of
students increased by 20%. How many
students attended tutorials on Friday?
_______ students attended tutorials.
7.) The price of the iPhone decreased from
$200 to $150.
7.) The price of the iPhone decreased from
$200 to $150.
The percent of decrease was _______.
8.) The price of a purse decreased from $80
to $50.
The percent of decrease was _______.
8.) The price of a purse decreased from $80
to $50.
The percent of decrease was _______.
9.)
Joey had $500 in his savings account.
After buying a video game, he now has
$150. What is the percent of decrease?
The percent of decrease was _______.
9.)
The percent of decrease was _______.
10.) Mrs. Jenson started the year with 25
students in her class. She now has 21
students. What is the percent of change?
The percent of decrease was _______.
10.) Mrs. Jenson started the year with 25
students in her class. She now has 21
students. What is the percent of change?
The percent of decrease was _______.
11.) A TV that sold for $1,200 was reduced to
$480. What was the percent of
decrease?
The percent of decrease was _______.
11.) A TV that sold for $1,200 was reduced to
$480. What was the percent of
decrease?
The percent of decrease was _______.
12.)
The tennis team is selling tickets to a
car wash for $6. When they do not sell
very many tickets, the team decreases
the price 25%. What is the new cost of
the ticket?
The new cost of the ticket is _______.
Joey had $500 in his savings account.
After buying a video game, he now has
$150. What is the percent of decrease?
The percent of decrease was _______.
12.)
The tennis team is selling tickets to a
car wash for $6. When they do not sell
very many tickets, the team decreases
the price 25%. What is the new cost of
the ticket?
The new cost of the ticket is _______.