Wednesday, December 7th
• Please take out your HW (worksheet) and complete warm up• Did you write down your
homework?WARM UP1. 40% of 3 is what number?
2. What percent is 6 out of 7?
Corny Joke of the Day
Where do bees go to the
bathroom?
The “BP” station
Fill in the missing pieces!
100
percent
Percent Practice 1
About 1/125 of the people in the United States have the last name
Johnson. What percent of the people have this last name?
(HINT: use part/whole = %/100)
Percent Practice 2
Ethan has mowed 40% of his lawn. If he has been mowing for 20 minutes, how long will it take him to mow the rest of his lawn?
Homework Answers
Common Uses of Percents
Discounts A discount is an amount that is subtracted from the regular price of an item. discount = price • discount rate total cost = price – discount
Tips A tip is an amount added to a bill for service. tip = bill • tip rate total cost = bill + tip
Sales tax Sales tax is an amount added to the price of an item.
sales tax = price • sales tax rate total cost = price + sales tax
Discounts
American Eagle is having a 10% off sale. If Liz wants to buy a sweater whose regular price is $19.95, about how much will she pay for the
sweater after the discount?
Step 1: Find 10% of 19.95
Step 2: SUBTRACT amount from 19.95
10
19.95 100 1
19.95 10 19.95 10 1.995
Answer: $17.955 so $17.96
You may use Calculators!
Tips
Michael’s dinner bill from Longhorns is $17.85. He wants to leave a tip that is 15% of the bill. About how much should his tip be? How much will he
have to pay total?Step 1: Find 15% of 17.85
Step 2: Add to total bill to find the amount he paid!
Sales Tax
Shelby is buying a dog bed for $29.75. The sales tax rate is 7%.
About how much will the total cost of the dog bed be?
Step 1: Find 7% of 29.75
Step 2: Add to total bill to find the amount he paid!
Finding the Best Deal
You want to get he new I-Pad but you want to find the best deal! Below are three stores and their prices for the I-
Pad. In your groups, you must determine what store has the best
deal?Best Buy: $498 for 15% off Target: $500 for 18% off Amazon: $490 for 10% off
Five Alive
1. Marta enlarges a photo that is 7 inches high and 4 inches wide. If the height of the enlargement is 10 inches, find the width?
2. How much is a 11% tip on a $20.97 bill?
3. NGMS won 72% of the games they played last season. If they played 15 games, how many games did they win?
4. The price on a book is $12.99. If sales tax is 4%, about how much will its total cost be?
5. The bill for a family dinner comes to $56.78. About how much would a 20% tip be?
Homework
Study GuideWeekly Review
due FRIDAYTomorrow and Friday:
PROJECT
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