Number Systems
NO CALCULATORS!
NO CALCULATORS!
What is the value of -7.94 + 2.13 - 4.65?
-10.46
Simplify: 7w - 7z + 4w - 5z
11w - 12z
Denise measured the length of her yard to be 90 feet. The actual length is 86 feet. What is the approximate percent of change in her measurement?
4%
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
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
What is the value of -3/5 + 4/7?
-1/35
What is the value of z in the equation 3z + 4 = 10?
z = 2
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%
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
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
In one month, a family spent the following amount on groceries: $145.16, $112.81, $86.35, and $161.59. How much did they spend altogether?
$505.91
A taxi company charges a $2.20 flat rate in addition to $0.55 per mile. Write an equation to represent how many miles a passenger can travel for $11.00.
2.20 + 0.55x = 11
Hannah estimated that a bottle could hold 2.2 liters. The actual volume of the bottle was 2 liters. What was the percent of change in Hannah's measurements?
9%
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
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
Aiden ate 1/8 of a bag of cheetos. Carter ate 1/5 of the bag. How much of the bag did they eat?
13/40
What is the solution to the equation -5x + 2 = 12?
x = -2
Brendan invested $4000 for 20 years at a simple interest rate of 4.5%. How much interest did he earn on his investment?
$3,600
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
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
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
A phone plan costs $10 per month, plus $0.03 per text message. John wants his phone bill to be $40, before taxes. What is the maximum number of text messages John can send?
t = 1000
Steve invests $2000 in an account that earns 6% simple interest. What will his account be worth at the end of 30 years?
$5,600
Mrs. Gray and her family went to dinner. Their bill was $35.80. They had to pay 7% sales tax, and they decided to leave a 20% tip(on the amount before tax). What was their total, with tax and tip?
$45.47
Hannah ran 3/4 of a mile in 1/8 of an hour. What is her speed in miles per hour?
6 miles per hour