Download Practice Sheets LT1-8

Unit 1C LT#5: I can calculate simple interest.
1.
principal
interest rate
time
simple interest
$5,791
________
5 years
$2,026.85
2.
principal
interest rate
time
simple interest
$54,433
3%
1 year
________
3.
principal
interest rate
time
simple interest
$867,230
________
4 years
$312,202.80
4.
principal
interest rate
time
simple interest
$442,992
________
2 years
$97,458.24
5.
principal
interest rate
time
simple interest
$12,659
1%
________
$126.59
Unit 1C LT#1: I can calculate percent, part, and whole of a number.
1. 34 is 20% of what number?
2. What percent of 240 is 216?
3. 90% of what number is 207?
4. 472 is what percent of 236?
5. 70% of 560 is what number?
6. 110% of what number is 385?
Unit 1C LT#2: I can calculate tax.
DVD Player
VCR
13 inch television
Laptop Computer
2-Way Radio
Answering Machine
$155
$118
$60
$2,006
$72
$107
Digital Camera
101-disc CD Changer
50 inch television
Portable CD Player
Cordless Phone
Wireless Phone
$364
$108
$1,056
$135
$29
$70
1. 6% sales tax on one 13 inch television. What is the sales tax?
2. 6.4% sales tax on one Answering Machine. What is the sales tax?
3. You want to buy the 101-disk CD Changer and also the Digital
Camera. If the sales tax is 6.5%, what is your after-tax total?
4. 27% discount on one 50 inch television. Sales tax is 4%. How much
is the after-tax total?
5. 8.4% sales tax on one Cordless Phone. What is the sales tax?
Unit 1C LT#3: I can calculate commission and fees.
1) Realtor John makes a commission of 2% when a house is sold by his
company. How much money will John make as commission if his
company sells the house for $300,000.00?
2) Salesman Mike makes a commission of 10% on each TV set sold at
store. Each TV costs $120. How much money will he make as
commission if store sells 25 TV sets?
3) A salesperson made $890.50 selling $6850 worth of electronic
equipment. Find the commission rate.
4) A real estate agent earns 2.4% on the sale of a house priced at
$89,950. What is her take home pay that day?
5) John is selling sets of knives and makes a 10% commission on all
sales. What would his commission be on the sale of a $3250 set of
knives?
Unit 1C LT#4: I can calculate tip or gratuity.
Problem
1) Jack and Jill’s bill at Pizza Hut was $25.73. They are
leaving a 20% tip. What is the tip amount and their
total?
2) Daniel’s total at a steak house was $73.94. He is
leaving an 18% tip. What is the tip amount and his
total?
3) Wally took Jasmine to a dinner show. Their bill was
$127.33. They are leaving a 17% tip. What is the tip
amount and their total?
4) James ordered a sub and cheese fries. His bill was
$12.11. He wants to leave a 12% tip. What is the tip
amount and his total?
5) Gwen ordered $57.84 of food from a burger joint.
She is leaving a 25% tip. What is the tip amount and
her total?
Tip
amount
Total
Unit 1C LT#6: I can calculate percent increase or decrease.
Directions: State whether each percent of change is a percent
increase or a percent decrease. Then find the percent of
increase or decrease. Round to the nearest whole percent.
1. Original: $100
New: $59
2. Original: 324 people
New: 549 people
3. Original: 58 Homes
New: 152 Homes
4. Original: 66 Dimes
New: 30 Dimes
5. Original: $53
New: $75
Unit 1C LT#7: I can calculate a markup or markdown.
1) A computer software retailer used a markup rate of 40%. Find the
selling price of a computer game that cost the retailer $25.
2) A golf shop pays its wholesaler $40 for a certain club, and then sells
it to a golfer for $75. What is the markup rate?
3) A shoe store uses a 40% markup on cost. Find the cost of a pair of
shoes that sells for $63.
4) An item originally priced at $55 is marked 25% off. What is the sale
price?
5) An item is marked down 15%; the sale price is $127.46. What was
the original price?
Unit 1C LT#8: I can calculate percent error.
1. Joshua uses his thermometer and finds the boiling point of ethyl
alcohol to be 75o C. He looks in a reference book and finds that the
actual boiling point of ethyl alcohol is 80oC. What is his percent error?
2. The density of water at 4oC is known to be 1.00 g/mL. Kayla
experimentally found the density of water to be 1.075 g/mL. What is
her percent error?
3. Samantha S. Sloppiness measured the volume of her soda before
she drank it for her midmorning snack. She measured the volume of the
12 oz. bottle to be 14 oz. What is her percent error?
4. The report said the carpark held 240 cars, but we counted only 200
parking spaces. What is the percent error?
5. They forecast 20 mm of rain, but we really got 25 mm. What is the
percent error?