Ratios

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.

Front

How do you write a ratio in simplest form?

Back

To write a ratio in simplest form, divide both terms of the ratio by their greatest common divisor (GCD).

Front

What is the ratio of red apples to green apples if there are 4 red apples and 3 green apples?

Back

4 red apples to 3 green apples.

Front

If the ratio of green marbles to blue marbles is 3:4, how many total marbles are there if you have 3 green marbles?

Back

There are 4 blue marbles, making a total of 7 marbles.

Front

What is the ratio of red toy cars to all toy cars if Patrick has 2 black, 3 red, and 5 white toy cars?

Back

The ratio of red toy cars to all toy cars is 3:10.

Front

In a ratio of 3:5, if there are 30 tenants, how many cars are there?

Back

There are 50 cars.

Front

What does it mean if a ratio is expressed as 1:4?

Back

It means for every 1 of the first quantity, there are 4 of the second quantity.

Front

How can you find the missing number in a ratio?

Back

You can set up a proportion and solve for the missing number using cross-multiplication.

Front

What is a part-to-part ratio?

Back

A part-to-part ratio compares different parts of a whole, such as the ratio of boys to girls in a class.

Front

What is a part-to-whole ratio?

Back

A part-to-whole ratio compares a part of a quantity to the entire quantity, such as the ratio of red apples to all apples.