6.3 Students will be able to use estimates to solve percent problems.

Warm Up

1. 6 is what percent of 75?2. What number is 60% of 17?3. What percent of 40 is 10?4. 40% of what number is 16?

5. Solve for x. 2x = 166. Solve for x. 5x = 23

8%10.225%40

X = 8

X = 4.6

6.3 Students will be able to use estimates to solve percent problems.

Did you tip the waiter?

6.3 Students will be able to use estimates to solve percent problems.

Learn to use estimates to solve percent problems.

Real Life Examples:

How much should I tip the waiter or waitress?

15% or 20%

6.3 Students will be able to use estimates to solve percent problems.

AirportBarber ShopBeauty Shop / Hair SalonBuffet-Style RestaurantCab Driver / Taxi / TaxicabCasinoChartered FlightsChildren's PartyCruise ShipContractorsDeliveriesDisc Jockey (DJ)Food Delivery ServiceGas StationGolf ClubHoliday Tipping GuidelinesHotelLimousine

Motor Coach Operator and Tour Guide(s) (extended tours)MoversParking GaragePet Related ServicesPersonal ServicesRestaurantSki Resort Sports ArenaSupermarketTattoo Artist Tour Guide / Bus Driver (day trips)Tow Truck OperatorTrainWedding

Places where you may need to tip someone

6.3 Students will be able to use estimates to solve percent problems.

parking attendant $1. If attendant helps with luggage/packages $5 is customary. If attendant has to go a great distance to get your car $2 or more is customary.

waiter or waitress 15% to 20% of bill.If you receive excellent service or if it is a 4 star + restaurant or large parties, a 20% or greater tip is recommended.

6.3 Students will be able to use estimates to solve percent problems.

An estimate is a useful answer that is close to the exact answer.

6.3 Students will be able to use estimates to solve percent problems.

Benchmark: 10%

What is 10% of 25?

What is 10% of 35?

What is 10% of 89.83?

What is 10% of 59.28?

What is 10% of 28.39?

2.5

3.5

8.983

5.928

2.839

Do you see a patternIn the answers?

6.3 Students will be able to use estimates to solve percent problems.

Benchmark: 10%

What is 10% of 25?

What is 10% of 35?

What is 10% of 12?

What is 10% of 9?

What is 10% of 23.21?

2.5

3.5

1.2

.9

2.321

Do you see a patternIn the answers?

Benchmark: 20%

What is 20% of 25?

What is 20% of 35?

What is 20% of 12?

What is 20% of 9?

What is 20% of 23.21?

5

7

2.4

1.8

4.642

6.3 Students will be able to use estimates to solve percent problems.

Benchmark: 10%

What is 10% of 24?

What is 10% of 8?

What is 10% of 12?

What is 10% of 23?

What is 10% of 58.2?

2.4

.8

1.2

2.3

5.82

Do you see a patternIn the answers?

Benchmark: 5%

What is 5% of 24?

What is 5% of 8?

What is 5% of 12?

What is 5% of 23?

What is 5% of 58.2?

1.2

.4

.6

1.15

2.91

6.3 Students will be able to use estimates to solve percent problems.

Benchmark: 10%

What is 10% of 24?

What is 10% of 8?

What is 10% of 12?

What is 10% of 23?

What is 10% of 58.2?

2.4

.8

1.2

2.3

5.82

Benchmark: 5%

What is 5% of 24?

What is 5% of 8?

What is 5% of 12?

What is 5% of 23?

What is 5% of 58.2?

1.2

.4

.6

1.15

2.91

What is 15% of 24?

What is 15% of 8?

What is 15% of 12?

3.6

1.2

1.8

6.3 Students will be able to use estimates to solve percent problems.

Restaurant Bill: $52.12(for two people)

Service: Excellent

How much will I tip?

1. Round the bill.$52.12: 50.00

2. Find 10%$5.00

3. Double it to find 20%$10

Your tip will be $10

6.3 Students will be able to use estimates to solve percent problems.

Restaurant Bill: $62.23(for two people)

Service: Excellent

How much will I tip?

1. Round the bill.$62.23: 60.00

2. Find 10%$6.00

3. Double it to find 20%$12

Your tip will be $12

6.3 Students will be able to use estimates to solve percent problems.

Restaurant Bill: $12.00(for two people)

Service: Poor

How much will I tip?

1. Round the bill.$12.00: 12.00

2. Find 10%$1.20

3. Divide it in two to find 5%$.60

4. Add the 5% and 10% to get 15%:

1.20 + .60 = 1.80 (I would round it to $2.00 to make it even)

Your tip will be $2

6.3 Students will be able to use estimates to solve percent problems.

Restaurant Bill: $22.00(for two people)

Service: Poor

How much will I tip?

1. Round the bill.$22.00: 22.00

2. Find 10%$2.20

3. Divide it in two to find 5%$1.10

4. Add the 5% and 10% to get 15%:

2.20 + 1.10 = 3.30 (I would round it to either $3 or $4 to make it even)

Your tip will be $3 or $4

6.3 Students will be able to use estimates to solve percent problems.

Restaurant Bill: $42.31(for two people)

Service: Excellent

How much will I tip?

1. Round the bill.$42.31: 40.00

2. Find 10%$4.00

3. Double it to find 20%$8

Your tip will be $8

6.3 Students will be able to use estimates to solve percent problems.

Le Bernardin . 155 West 51st Street New York CityRestaurant Bill: $392.48

(for two people)

How much will I tip?

1. Round the bill.$392.48: 390.00

2. Find 10%$39.000 = $39

3. Double it to find 20%$78

Your tip will be $78.

6.3 Students will be able to use estimates to solve percent problems.

Restaurant Bill: $72.48(for seven people)

How much will I tip?

1. Round the bill.$72.48: 72.00

2. Find 10%$72.000 = $7.20

Your tip will be $7.20

Meal Price: 72.48 + 7.20 79.68

Waiter / Waitress 5% to 10% of the total bill is suggested. This depends heavily on exactly how much work is done by the waitstaff. In some restaurants, the waitstaff does very little. Usually is simply bringing fresh linen and/or utensils. In some other restaurants, the staff brings drinks, and

6.3 Students will be able to use estimates to solve percent problems.

Practice going out to eat with the following activity:

Choose a menu. Fill out the worksheet which helps you determine tip.