Understanding and Writing Ratios
Write a ratio of 3 apples to 6 oranges in simplest form.
1:2(Half points for 3:6)
What is a ratio table used for?
To show pairs of numbers that form equivalent ratios.
Which is a better deal: 4 candies for $2 or 6 candies for $3
They are equivalent(both $0.50 cents each)
You mix 2 cup of juice with 6 cups of water. What's the ratio of juice to total liquid?
2:8 or 1:4
A bag has 2 red marbles and 3 green marbles. What is the total-to-green ratio?
5:3
There are 12 boys and 8 girls in a class. Write the ratio of boys to total students.
12:20 or 3:5
If 2 pencils cost $1, complete the ratio table for 4 pencils.
4 pencils->$2
Compare the ratios 2:3 and 4:5 using equivalent ratios. Which is larger?
4:5 is larger(0.8 vs. 0.67)
150 miles
A car travels 180 miles in 3 hours. How far will it go in 5 hours at the same rate?
300 miles
A bag has 5 red, 10 blue, and 15 green marbles. Write two different ratios that compare red to blue and red to green.
5:10 and 5:15 (Simplified 1:2 and 1:3)
In a graph showing the number of apples vs. number of oranges in equivalent ratios, what should the line look like?
A straight line through the origin.
If one car travels 60 miles in 2 hours and another travels 75 miles in 3 hours, which is faster?
The first(30 mph vs. 25 mph)
A car uses 12 gallons of gas to travel 240 miles. What is the rate in miles per gallon?
20 miles per gallon
A smoothie recipe calls for 4 parts fruit to 1 part yogurt. If you use 15 cups of fruit, how much yogurt do you need?
3.75 cups
What does the ratio 4:1 mean in words?
For every 4 of one thing, there is 1 of another.
Fill in the missing number: 3 shirts cost $15. How much do 5 shirts cost?
$25
Ona. double number line, if 5 smoothies cost $20, how much do 8 smoothies cost?
$32
A class has 15 students wearing blue and 10 wearing red. What fraction of the class is wearing blue?
15/25=3/5
Two runners complete 400 meters in 50 seconds and 600 meters in 80 seconds. Who runs faster?
Runner A (8 meters per second vs. 7.5 meters per second)
A recipe uses 3 cups of flour for every 2 cups of sugar. Write two equivalent ratios.
3:2, 6:4, 9:6, etc.
If a graph shows that 4 notebooks cost $6 and 8 notebooks cost $12, what is the unit rate(cost per notebook)?
Hint: Divide the $ by notebooks to find unit rate
$1.50 per notebook
A train travels 150 miles in 3 hours. Use a ratio table to find how far it goes in 5 hours.
250 miles
A school's art club paints 6 posters in 4 hours. How many can they paint in 10 hours if they keep the same rate?
15 posters
A bakery uses a sugar-to-flour ratio of 2:5. If 45 cups of flour are used, how many cups of sugar are needed?
18 cups