Ratios
A bag has 3 red marbles and 5 blue marbles. What is the ratio of red to blue?
3:5 OR 3 to 5
If you drive 120 miles in 2 hours, what is your speed in miles per hour?
60 miles per hour (mph)
2/7 + 3/7
5/7
4.5 + 2.75
7.25
What is the opposite of -15?
15
Simplify the ratio 12:18 to its simplest form.
2:3 OR 2 to 3
A 12-ounce box of cereal costs $3.60. What is the price per ounce?
$0.30 per ounce
5 x 2/3
3 1/3 OR 10/3
12.8 - 5.12
7.68
What is the absolute value of -42?
42
A classroom has a girl-to-boy ratio of 3:2. If there are 10 boys, how many girls are there?
15 girls
Brand A is 5 lbs for $10. Brand B is 3 lbs for $7.50. Which is the better buy?
Brand A ($2/lb vs Brand B $2.50/lb)
2 1/2 - 1 3/4
3/4
0.4 x 0.08
0.032
Order these from least to greatest:
-5, 2, -10, 0, 4
-10, -5, 0, 2, 4
The ratio of cats to dogs at a shelter is 4:5. If there are 45 animals total, how many are dogs?
25 dogs
A snail crawls 1/2 a yard in 1/4 of an hour. How many yards per hour?
2 yards per hour
3/4 divided by 2/3
1 1/8 OR 9/8
15.6 divided by 3
5.2
-8 + 15
7
In a recipe, the ratio of flour to sugar is 5:2. If you use 6 more cups of flour than sugar, how much sugar do you need?
4 cups of sugar
You buy 3.5 gallons of gas for $14.70. How much would 10 gallons cost?
$42.00 (Unit rate is $4.20 per gallon)
3 1/3 divided by 1 1/2
2 2/9 OR 20/9
2.25 divided by 0.5
4.5
John made a $50 deposit into his bank account. Then he bought a phone for $100. Then he received a $25 payment from a friend. Write an integer to describe his final bank balance.
-25