10/24/11

• Get out your homework (odds on proportions worksheet)

• Bellringer:– Write down in 5 sentences or less, what do you

know about discounts?

Homework Answers

1. No 3. No 5. Yes 7. Yes

9. Yes 11. Yes 13. Yes 15. No

Continued

1. 6 3. 4 5. 9 7. 15

9. 8 11. 10 13. 216 15. 60

17.32

Turn the worksheet into the basket.

I Discounts

A is a percentage taken off of a purchase price.

discount

How to find the Discount & Discounted Price

1. Find out the % of the discount. Convert the % to a decimal.

2. Multiply the decimal by the original price.

3. Take the answer in step 2 and subtract it from the original price.

Example1) Discount 20% = .20

2) $10 x .20 = $2.00

3) $10.00 - $2.00 = $8.00

Calculating Discount

Step One- Convert the percent to a decimal.

30% = .3

Figure out your price of a CD, if the original price is $15.50 with a discount of 30%.

Step Two – Multiply the price and the decimal.

$15.50 x .3 = $4.65Step Three- Subtract the discount from the original price.

$15.50 - $4.65= $10.85

Amanda went to Circuit City and bought an MP3 Player. If the MP3 Player’s original price is $78.99 and the store is offering a 25% discount, what is

the new price of her MP3 player?

Step One- 25% = . 25

Step Two – $78.99 x .25 = $19.75

Step Three- $78.99 - $19. 75 = $59.24

Old Navy is having a sale on winter clothes. If Shelbi found a sweater for $35.99, how much is

the sweater now with a 35% discount?

Step One- 35% = . 35

Step Two – $35.99 x .35 = $12.60

Step Three- $35.99 - $12.60 = $23.39

Dominos is having a 40% off sale on their large pizzas. If Robert bought a large pizza for $15.99,

how much would it cost when he applied the discount ?

Step One- 40% = .4

Step Two – $15.99 x .4 = $6.40

Step Three- $15.99 - $6.40 = $9.59

Jerrod went to Walmart to buy a new video game. The game costs $51.49 and it was on sale for 15% off. What was the new price for the video game?

Step One- 15% = .15

Step Two – $51.49 x .15 = $7. 72

Step Three- $51.49 - $7.72 = $43.77

Heather bought a new flat screen television for $1,299. The store was offering a 25% discount on all HDtvs. How much did Heather end up paying

for the TV?

Step One- 25% = .25

Step Two – $1,299 x .25 = $324.75

Step Three- $1,299 - $324.75= $974.25

Target was advertising a 50% off sale on all candy. If James bought some candy for $1.50, how much did he spend after the discount was

applied?

Step One- 50% = .5

Step Two – $1.50 x .5 = .75

Step Three- $1.50 - .75 = $ 0.75

Discount Worksheet

• Order of Operations on study island is due Friday.

• All make up work and test corrections are due Wed!