Warm-up

Find the percent of change. Indicate if it is an

increase or decrease.

1. 40 to 15

2. 30 to 85

Find the final price.

3. $49.50 with 30% discount

4. $89.95 bill with 7% tax

5. $115.75 with 20% tip

Percentages Review

1. Sue’s electric bill increased from $45

per month to $73 per month. What is the

percent of change to the nearest whole

number?

2. Ben moved to a new home. His taxes at his old

house were $3,500 per year. His new taxes are

$2,875 per year. What is the percent of change to

the nearest whole number? Indicate if it is an

increase or a decrease.

Which situation changed by the greatest

percentage?

Situation A:

Silvia changed phone plans. Her old plan

cost $75 per month and now she pays $63

per month on her new plan.

Situation B:

Frank got rid of his satellite dish which cost

$89 per month. He now has cable and it

costs him $108.

Ashley is shopping for her family for the holidays. She found

a new lamp for her mom ($49.99), a pair of shoes for her

sister (89.99), and a sweater for her dad (59.99). If all clothes

and shoes are on sale for 35% off and household items are

on sale for 20% off, how much did she spend?

Elizabeth is shopping for a new purse. The

purse original costs $135. She found it on sale

for 40% off. How much money did she save?

Angela went shopping in Disney. Her total came to

$435.80 before taxes. If Orange County charges

6.5% tax, what is her bill going to cost?

Warm-up

Find the percent of change. Indicate if it is an

increase or decrease.

1. 45 to 85

2. 30 to 15

Find the final price.

3. $29.50 with 30% discount

4. $89.50 bill with 7% tax

5. $165.75 with 18% tip

Percentages Review

Back to our previous question…

Ashley is shopping for her family for the holidays. She found

a new lamp for her mom ($49.99), a pair of shoes for her

sister (89.99), and a sweater for her dad (59.99). If all clothes

and shoes are on sale for 35% off and household items are

on sale for 20% off, how much did she spend?

If the taxes in her town is 8%, how much is her final cost?

Ana opened up a savings account that

pays 4.5% simple interest. If she put $1000

in and does not add any more or take

any out, how much interest would she

earn in 10 years?

Ana opened up a savings account that

pays 4.5% simple interest. If she put $1000

in and does not add any more or take

any out, how much would she expect to

be in her account in 10 years?

Ashley opens up her first credit card with an interest

rate of 16.99%. She gets a flat tire and has to pay

with her card. If her bill for towing and a new tire

comes to $450, how much will her bill be after 1

month?

Nicole deposited $500 in a savings account

with an interest rate of 2.5%. How much

money will she have after 8 months?

Cole borrows $50 from Adam, who charges

him 10% interest. If he pays him back in 5

months, how much money does he owe

Adam?

Camille purchases a tv for $1,250. If the

taxes are 6%, how much money does

she pay for the tv?

Kevin purchases sneakers that originally costs $139.99, but

were on sale for 25% off. Tommy finds the same sneakers

at another score for $150 with 35% off. Who pays more for

the sneakers?

a. Kevin

b. Tommy

Jacob and Joshua are racing to see who can increase

their running speed the most. Jacob can run 15 laps in

a period and Joshua can run 18 laps. If Jacob

increases to 21 laps and Joshua increases to 22 laps,

who increased by the biggest percentage?

a. Jacob

b. Joshua