Percents and Fractions
What is 10% of 80?
8
Write the ratio 12 apples to 3 oranges in simplest form.
4:1
A bike travels 20 miles in 1 hour.
What is the unit rate per hour?
20 mph
What is the perimeter of a square with side length 9 cm?
36 cm
Divide: 1/4 by 1/4
1
Write 32% as a decimal.
0.32
If 3 notebooks cost $9, how much do 7 notebooks cost at the same rate?
$21
A grocery store sells 4 cans for $5.
What is the price per can?
$1.25
Area of a rectangle: length = 8 in, width = 5 in.
40 in²
Divide 5/6 by 1/2.
5/3
Which is larger: 0.4 or 35%?
0.4 (since 0.4 = 40%)
A recipe uses 2 cups of flour for every 5 cups of sugar.
How much sugar is needed for 6 cups of flour?
15 cups
You buy 3 pounds of apples for $7.50.
How many pounds can you buy with $20?
8 pounds
A triangle has area 24 cm² and base 8 cm.
What is its height?
6 cm
Divide 2/3 by 3/5
10/9
A student got 18 out of 24 correct. What percent is that?
75%
A map scale shows 1 inch = 50 miles.
How many miles are 3.5 inches?
175 miles
A car uses 15 gallons of gas to go 360 miles.
What is the miles per gallon?
24 mpg
A rectangular prism is 4 cm × 5 cm × 6 cm.
What is its volume?
120 cm³
2 ÷ 1/3
6
Write 0.008 as a fraction and simplify.
1/125
A class has a ratio of boys to girls of 8:12.
If there are 30 students total, how many are boys?
10 boys
A printing machine makes 84 copies in 6 minutes.
How many copies can it make in 1 hour at the same rate?
840 copies
Convert 3.5 feet to inches.
42 inches
Divide 7/8 by 5/12.
21/10