Ratios
There are 8 red marbles and 12 blue marbles. What is the ratio of red marbles to blue marbles in simplest form?
2:3, 2/3, 2 to 3
A cyclist rides 12 miles in 2 hours. At the same rate, how far will the cyclist travel in 10 hours?
60 miles
A baker makes 24 cookies in 6 minutes. How many cookies does the baker make per minute?
4 cookies per minute
Convert 6 feet to inches.
72 inches
Find the missing number: =\frac{?}{20}\)
12
5 pencils cost $3. How much does 1 pencil cost?
$0.60 per pencil
A car travels 10.5 miles in 0.5 hours. How many miles does it travel per hour?
21 miles per hour
Convert 7 quarts to cups.
28 cups
4 apples cost $6. How much do 12 apples cost?
$18
A runner runs 9 miles in 3 hours. At the same rate, how far will the runner travel in 5 hours?
15 miles
Define a unit rate.
A unit rate is a rate that compares two different quantities when the second quantity is 1 unit.
Convert 450 seconds to minutes.
7.5 minutes
A class has 10 boys and 15 girls. What is the ratio of girls to the total number of students in simplest form?
3:5, 3/5, 3 to 5
Store A sells 4 apples for $2. Store B sells 6 apples for $3. Which store has the lower cost per apple, or are they the same? Explain.
The rates are the same because both stores have the same unit rate, $0.50 per apple.
Store A sells 5 apples for $3. Store B sells 8 apples for $4. Which store has the lower price per apple? Explain.
Store B has a lower price per apple since $4 divided by 8 gave me a unit cost of $0.50 per apple while for Store A, the unit cost was $0.60 per apple when you divide $3 by 5.
Convert 3.5 liters to milliliters.
3,500 milliliters
A sports drink is made with 2 cups of concentrate for every 5 cups of water. If you use 8 cups of concentrate, how many cups of water do you need?
20 cups of water
A machine fills 18 bottles in 6 minutes. At the same rate, how many bottles can it fill in 15 minutes?
45 bottles
2.5 pounds of apples cost $6.25. What is the cost per pound?
$2.50 per pound
Convert 8 inches to centimeters. Use 1 in. = 2.54 cm.
20.32 centimeters