Ratio Part to Part Worksheet

Welcome to our Ratio Part to Part worksheet page.

How does Ratio work?

How to work out Part to Part Ratios

When we look at ratios, we are usually looking at the relationship of one object compared to another.

An example might be the relationship between the number of cars and the number of wheels.

In the case of cars and tyres the relationship (for most cars) is that there are 4 wheels for each car.

We would say that the ratio of cars to wheels is 1 to 4 or 1:4 (for each car, there are 4 wheels)

What does lowest term ratio mean?

Just like fractions, ratios can be simplified.

We can simplify ratios by finding common factors of the numbers involved and dividing them all by the common factors.

The ratios are in lowest terms (or simplest form) when there are no more common factors except 1.

Look at the example below:

The ratio of rabbits to cats is 4 to 2 or 4:2.

Because these two numbers have a common factor of 2, they can both be divided by 2 to give a simpler ratio.

So 4 : 2 = (4 ÷ 2) : (2 ÷ 2) = 2 : 1

There are now no common factors apart from 1, so we cannot simplify the ratio further.

So the ratio of rabbits to cats in lowest terms is 2:1. This means that there are 2 rabbits for every cat.

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Ratio Part to Part Online Quiz

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This quiz tests your knowledge and ability of ratio of one object compared to another.

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