Write the Ratio
There are 3 red apples and 5 green apples. Write the ratio of red apples to green apples.
3:5
Is 2:5 equivalent to 4:10?
yes
2:5 = 4:___
10
What is the value of the ratio 2:5?
2/5 = 0.4
A recipe uses 2 cups of flour for every 10 pancakes. How many pancakes can you make with 2 cups?
10 pancakes
There are 4 dogs and 7 cats. Write the ratio of dogs to cats as a fraction.
4/7
Write an equivalent ratio for 3:4 by multiplying both numbers by 3.
9:12
3:5 = ___:20
12
What is the value of 4:8?
4/8 = 1/2
A class has 6 boys and 9 girls. Write the ratio of boys to girls and find its value.
6:9 = 2:3, value = 2/3
A basket has 8 apples and 12 oranges. Write the ratio of apples to oranges and simplify it.
2:3
Which is equivalent to 4:7?
A) 8:14 B) 12:20 C) 16:21
A) 8:14
5:8 = 20:___
32
Find the value of 6:15. Simplify your answer.
6/15 = 2/5
A pancake recipe uses 2 cups of flour for every 10 pancakes. How many cups are needed for 30 pancakes?
6 cups
A school has 15 basketballs and 25 soccer balls. Write the ratio of basketballs to soccer balls in simplest form.
3:5
Find two ratios equivalent to 5:6.
Examples: 10:12 and 15:18
___:9 = 8:18
4
What is the value of 12:20? Simplify your answer.
12/20 = 3/5
A drink mixture uses 3 cups of juice for every 5 cups of water. If you use 15 cups of water, how much juice is needed?
9 cups of juice
A box contains 18 red, 24 blue, and 30 green pencils. Write the ratio of red pencils to all pencils in simplest form.
18:72 = 1:4
Are 6:8, 9:12, and 15:20 all equivalent? Explain.
Yes — all simplify to 3:4
7:12 = ___:36
21
Which has the greater value: 3:5 or 4:7? Show how you know.
3:5 = 3/5 = 0.6
4:7 ≈ 0.571
So 3:5 has the greater value.
A family needs 2 cups of flour for every 10 pancakes. They need to make 45 pancakes. How many cups of flour do they need?
9 cups of flour