Writing 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:b'.

Front

How do you write a ratio?

Back

A ratio can be written in three ways: using a colon (a:b), as a fraction (a/b), or with the word 'to' (a to b).

Front

What does 'part to part' ratio mean?

Back

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

Front

What does 'part to whole' ratio mean?

Back

A part to whole ratio compares a part of a group to the entire group, such as the number of dogs to all pets.

Front

If there are 2 dogs and 4 cats, what is the ratio of dogs to cats?

Back

The ratio of dogs to cats is 2:4, which simplifies to 1:2.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both sides of the ratio by their greatest common divisor (GCD).

Front

What is the ratio of boys to girls if there are 13 boys and 10 girls?

Back

The ratio of boys to girls is 13:10.

Front

If a class has 20 students, and 8 are girls, what is the part to whole ratio of girls to the class?

Back

The part to whole ratio of girls to the class is 8:20, which simplifies to 2:5.

Front

What is the total number of pets if there are 2 dogs, 4 cats, and 5 hamsters?

Back

The total number of pets is 2 + 4 + 5 = 11.

Front

What is the ratio of circles to squares if there are 5 circles and 6 squares?

Back

The ratio of circles to squares is 5:6.