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Number Systems
Expressions
Simple Interest & Percent Change
Sales Tax, Discount, & Commission
Miscellaneous
100

What is the value of -7.94 + 2.13 - 4.65?

-10.46

100

Simplify: 7w - 7z + 4w - 5z

11w - 12z

100
Denise measured the length of her yard to be 90 feet. The actual length is 86 feet. What is the approximate percent of error in her measurement?
4.7%
100
The regular price of a computer monitor is $185. It is on sale for 15% off. Sales tax is 8%. What is the cost of the computer monitor after the discount and sales tax are applied?
$169.83
100
On Monday, Alison made 12 out of the 22 basketball shots she attempted. At this rate, how many shots will Alison make on Tuesday, if she attempts 30 basketball shots?
16
200
What is the value of -3/5 + 4/7?
-1/35
200

Simplify the following expression. 8(x+2) - 6x

2x + 16

200
In 1992, the population of a town was 8000 people. In 1997, the population was 14000. What was the percent increase in the population?
75%
200
Mary bought a shirt on sale for $15. The sales tax was 10%. If Mary paid with a $20 bill, what was her change.
$3.50
200
Gloria earned $14,000 commission in 25 weeks at her new sales position. At that rate, how much will Gloria earn in 52 weeks?
$29,120
300
In one month, a family spent the following amount on groceries: $145.16, $112.81, $86.35, and $161.59. Which is the best estimate of the total amount this family spends on groceries in one year?
$6,000
300

Factor the following expression: 32x - 6

2(16x - 3) 

300
Hannah estimated that a bottle could hold 2.2 liters. The actual volume of the bottle was 2 liters. What was the percent error in Hannah's measurements?
10%
300
Jamal's lunch costs $8.95, plus 6.5% sales tax. What is the total cost of Jamal's lunch, including sales tax?
$9.53
300
Apples cost $1.48 per pound at the grocery store. Sarah bought 6 pounds of apples. Steve bought 10 pounds of apples. How much more did Steve spend on apples?
$5.92
400
The sum of two integers is -15. The product of the same two integers is 54. What are those two integers?
-6 and -9
400

A gallon of gasoline costs g dollars.  Paul puts 12.5 gallons of gasoline in his car and 0.75 gallons of gasoline in a portable tank. Write an expression to represent how much he spent on gasoline. 

Various answers

13.25g

12.5g +.75g

g(12.5 + .75)

400
My final balance after 48 months was $896. If I originally put $800 in the bank, what was the interest rate?
3%
400
Mark works at a clothing store and earns a 20% commission on his total sales. Last month, Mark sold $1500.00 in clothing sales. What was his commission last month?
$300
400
Mrs. Jones baked 48 cookies. Her son ate (1/4) of the cookies, then her husband ate (1/6) of the remaining cookies. How many cookies were left?
30 cookies
500
There were 20 drinks in a cooler. Joey drank 15% of the drinks. Sandra drank 1/5 of the drinks. Hannah drank 1/4 of the drinks. Tammy drank 30% of the drinks. How many drinks are left in the cooler?
2 drinks
500

Simplify 3(2x−5)−4(x−3)+2(3−x)−(5x−7)

-5x + 10

500

What would my final balance be if I put $650 in the bank for 60 months with an interest rate of 6%?

$845.00

500
Baseball cards cost $3.79 a pack. There is a 25% discount if 10 or more packs are purchased. Sales tax is 7%. If Terry bought 15 packs of cards, about how much did he pay?
$45.00
500
A company made a profit of 3.5 million dollars in 2005 and 1.75 million in 2006. If the company lost .5 million dollars each year for the next 4 years, what was the company's total profit from 2005-2010?
3.25 million