Ratios
What is the ratio of 3 apples to 6 oranges? (Not Simplified)
3:6
A car travels 120 miles in 4 hours. What is the unit rate in miles per hour?
30 miles per hour
Is the ratio 2:4 equivalent to 1:2?
Yes
There are 12 inches in 1 foot. How many feet are in 36 inches?
3 feet
A coin is flipped once. What is the probability of getting heads?
1/2 or 50%
There are 8 boys and 12 girls in a class. What is the simplified ratio of boys to girls?
2:3
A store sells 5 notebooks for $10. What is the price per notebook?
$2 per notebook
Which ratio is equivalent to 3:5?
A) 6:9 B) 9:15 C) 5:3 D) 12:25
B) 9:15
There are 1,000 meters in a kilometer. How many meters are in 3.5 kilometers?
3500 Meters
A six-sided die is rolled. What is the probability of rolling a 4?
1/6
If a recipe uses 4 cups of flour for every 2 cups of sugar, how many cups of flour are needed for 10 cups of sugar?
20 cups of flour
A runner completes 6 laps in 9 minutes. What is the unit rate in laps per minute?
0.67 laps per minute (or ⅔ laps per minute)
Fill in the blank to make an equivalent ratio:
4:6 = __:42
28
There are 16 ounces in 1 pound. How many pounds is 40 ounces?
2.5 pounds
A bag has 3 red, 2 blue, and 5 green marbles. What is the probability of picking a red marble?
3/10
A map uses a scale of 1 inch to represent 8 miles. How many miles are represented by 3.5 inches on the map?
28 miles
A printer prints 240 pages in 12 minutes. How many pages does it print per minute?
20 pages per minute
The ratio of boys to girls is 5:8. If there are 40 girls, how many boys are there if the ratios are equivalent?
25 boys (because 5/8=x/40⇒x=255/8 = x/40 \Rightarrow x = 255/8=x/40⇒x=25)
There are 60 minutes in 1 hour. If a movie lasts 135 minutes, how many hours and minutes long is it?
2 hours and 15 minutes
A spinner has 8 equal sections labeled 1 through 8. What is the probability of landing on an even number?
4⁄8 = ½
The ratio of red to blue marbles is 5:3. If there are 64 marbles in total, how many red marbles are there?
40 red marbles
A bakery uses 15 cups of flour to make 10 loaves of bread. How many cups of flour are used per loaf?
1.5 cups of flour per loaf
A car travels 120 miles on 4 gallons of gas. How many miles would it travel on 10 gallons, if the ratio stays equivalent?
300 miles (because 120/4=30120/4 = 30120/4=30 miles per gallon; 30×10=30030 × 10 = 30030×10=300)
A car travels 90 kilometers per hour. Use the conversion 1 mile ≈ 1.6 kilometers to find about how many miles per hour the car is traveling.
About 56 miles per hour
(90÷1.6=56.2590 ÷ 1.6 = 56.2590÷1.6=56.25)
A bag contains 4 red, 3 blue, and 3 yellow marbles.
If you pick one marble, replace it, then pick another, what is the probability that both marbles are blue?
9⁄100 or 0.09 (9%).