RATIOS BASICS
Write the ratio of stars to hearts if there are 3 stars and 5 hearts.
3:5 (or 3 to 5)
Is 2:3 equivalent to 4:6?
Yes
If 3 apples cost $6, what is the unit rate
(cost per apple)?
$2 per apple
The ratio of boys to girls in a class is 3:4. If there are 12 boys, how many girls are there?
16 girls
A map has a scale of 1 inch = 10 miles. If two cities are 3 inches apart on the map, how many miles apart are they?
30 miles
A recipe calls for 2 cups of flour and 1 cup of sugar. What is the ratio of flour to sugar?
2:1
Find the missing number: 3:5 = ?:15
9
A car travels 240 miles in 4 hours. What is the unit rate in miles per hour?
60 miles per hour
In a recipe, the ratio of sugar to flour is 1:3. If you use 2 cups of sugar, how much flour do you need?
6 cups of flour
A model car is 6 inches long and represents a real car that is 18 feet long. What is the scale?
1:36
In a class, there are 12 boys and 18 girls. Write the ratio of boys to total students.
12:30 (or simplified: 2:5)
Which ratio is equivalent to 6:8?
A) 3:4
B) 2:3
C) 9:12
Both A and C (3:4 and 9:12)
A store sells 5 notebooks for $15. What is the cost of 1 notebook?
$3 per notebook
A school has 240 students. The ratio of 6th graders to 7th graders is 5:3. How many 6th graders are there?
150 sixth graders
If a scale drawing uses 1 cm to represent 2 meters, how many centimeters represent 10 meters?
5 centimeters
A bag contains red and blue marbles in the ratio 4:7. If there are 4 red marbles, how many blue marbles are there?
7 blue marbles
Simplify the ratio 24:36
2:3
If 8 workers can build a fence in 6 hours, how many hours does it take 1 worker?
48 hours
A juice recipe mixes orange juice and apple juice in the ratio 2:5. If you have 14 cups of orange juice, how many cups of apple juice do you need?
35 cups of apple juice
A blueprint uses a scale of 1/4 inch = 1 foot. If a room is 12 feet long, how long should it be on the blueprint?
3 inches
The ratio of cats to dogs at a shelter is 5:8. If there are 40 dogs, how many cats are there?
If 5:7 is equivalent to 35:x, what is x?
49
A runner completes 2 miles in 16 minutes. What is their speed in miles per minute?
1/8 mile per minute (or 0.125 miles per minute)
A painting is 20 inches wide and 30 inches tall. If you want to enlarge it so it's 50 inches wide, how tall should it be?
75 inches
Two similar rectangles have a ratio of 2:5. If the smaller rectangle has a perimeter of 24 inches, what is the perimeter of the larger rectangle?
60 inches