A ratio is a way of comparing two numbers. Ratios tell how much of one thing you have compared to another.
You can write ratios in a few different ways.
Let's try an example. The picture below shows 2 circles and 5 triangles.
Here are three ways to write the ratio of circles to triangles.
Let's try another example. The picture below shows 4 dogs and 1 cat.
Here are three ways to write the ratio of dogs to cats.
You could also write the ratio of cats to dogs.
