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Ratios
Ratio Word Problems
Subtract Fractions
Brain Teasers
Comparing Ratios
100
In a drawing, there are three circles, four stars, and three triangles. What is the ratio of stars to the total number of shapes.
What is 2/5 or 4/10
100

A recipe calls for 2 cups of lemon juice for every 5 cups of water. If you use 10 cups of water, how many cups of lemon juice do you need?

4 cups

100

3 1/4 − 1 3/4  

1 1/2

100

Which number is the odd one out?
4, 9, 16, 25, 36, 49

9

100
Of the 15 children at the park, 12 children are riding bikes and 3 children are riding scooters. What s the ratio of bikes to children? WRITE 3 WAYS!
12 to 15 12/15 12:15
200
Lil blew up 7 balloons. Kathy blew up 5 balloons. What is the ratio of total balloons to Kathy's balloons?
12 to 5
200

In a bag of marbles, the ratio of red to blue is 3:2. If there are 15 red marbles, how many blue marbles are there?

10 blue marbles

200

5 1/3 − 2 2/3

2 2/3

200

What is the next number in this pattern?
2, 5, 10, 17, 26, ?

37

200
A car can travel 600 miles on 20 gallons of gas. What is the unit rate of miles per gallon for this car?
30 to 1
300

?:4:8 = 2:?:4

4 : 4 : 8 = 2 : 2 : 4

300

There are boys and girls in a classroom in the ratio 4:5. If there are 36 students in total, how many are boys and how many are girls?

boys=16, girls=20

300

7 1/5 − 4 4/5

2 2/5

300

I am a 4-digit number.

  • The sum of my digits is 17.

  • My thousands digit is 2 more than my hundreds digit.

  • My tens digit is 1 less than my hundreds digit.
    What is my number?

5728

300
The ratio of cups of peas to cups of carrots is 3 to 2. Write 3 equivalent ratios.
6 to 4, 12 to 8, 15 to 10
400

There are 10 rabbits in a cage. The ratio of white rabbits to grey rabbits is 3:7. How many white rabbits are in the cage?

3 white rabbits

400

o make a certain shade of green paint, you need to mix blue, yellow, and white paint in the ratio 3:2:1.
If you have 12 liters of blue paint, how much yellow and white paint do you need to keep the ratio?

yellow=8 L, white=4 L

400

- 10 1/6 + 5 5/6

-4 1/3

400

The Multiplication Puzzle
How many times can you subtract 6 from 36?

1 time

400
Ahmad's mom prepares a plate with 5 peaches and 4 apples for 6 students in his study group. What is the ratio of fruit to students written as a fraction?
9/6 OR 3/2
500

?:¾:½ =½:?:1

3/4:3/4:1½ =1/2:1/2:1

500

A train company sells first-class, business-class, and economy-class tickets in the ratio 2:3:5. If they sell 360 tickets in total, how many of each type of ticket were sold?

First-class =72, Business = 108, Economy =180

500

4 1/4 − 5 2/3 − 2 1/2

-3 11/12

500

You have 8 boxes, each containing 8 smaller boxes, and each of the smaller boxes contains 8 even smaller boxes. How many boxes are there in total?

512 boxes

500
A recipe uses 2 cups of chopped onions, 6 cups of chopped tomatoes, 1 tablespoon of olive oil, and 3 potatoes. How many cups of tomato are need to triple the recipe? Explain.
18, because 6 X 3 = 18.