Number Operations
Simplify: 12.5 - 4.75
7.75
Simplify the expression: 5x + 3y - 2x + y
3x + 4y
A square room is 12 feet long. What is its area in square feet?
144 square feet
A jacket originally costs $80. If it is on sale for 25% off, what is the discount amount?
$20.00
What is the mean (average) of the following set of numbers: 10, 5, 8, 7?
7.5
Multiply: 3/4 x 8/9
2/3
Solve for x: x-14.2=3.5
x=17.7
How many ounces are in 3 pounds?
48 ounces (Since 1 lb = 16 oz)
A car travels 150 miles in 3 hours. What is its average rate of speed in miles per hour?
50 mph
What is the median of the following set of numbers: 15, 20, 12, 18, 10?
15
Divide: 135 divided by 0.05
2700
Solve for n: n/5 = 12
n=60
A circle has a diameter of 10 inches. What is its circumference? Use 3.14 for pi.
31.4 inches
If the ratio of boys to girls in a class is 3:2, and there are 12 boys, how many girls are there?
8 girls
If a customer pays with a $20 bill for an item that costs $13.45, how much change will they receive?
$6.55
Convert the fraction 5/8 to a percentage
62.5%
What is the value of 3(4+5)-32=
18
What is the perimeter of a rectangular fence that is 20 meters long and 15 meters wide?
70 meters (P = 2l + 2w)
A shirt costs $25. If sales tax is 6%, what is the total cost of the shirt?
$26.50
A bank account has $450.00. If you deposit $125.50 and then withdraw $75.25, what is the new balance?
$500.25
Calculate the value of 33 + (15 - 7) x 2.
43
Solve for x: 3x + 8 = 20
x=4
A recipe calls for 1 1/2 cups of flour. If you triple the recipe, how much flour do you need?
4 1/2 cups
A worker earned $720 last week, which was 90% of her regular pay. What is her regular pay?
$800
A data set shows the following scores: 85, 90, 85, 95, 80. What is the mode score?
85