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 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 does the ratio 3:2 mean?

Back

The ratio 3:2 means that for every 3 units of the first quantity, there are 2 units of the second quantity.

Front

How do you find the total number of parts in a ratio?

Back

Add the numbers in the ratio together. For example, in the ratio 3:2, the total number of parts is 3 + 2 = 5.

Front

What is the ratio of red circles to blue stars if there are 7 red circles and 4 blue stars?

Back

The ratio of red circles to blue stars is 7:4.

Front

If there are 4 apples, 2 bananas, and 5 pears, what is the ratio of pears to apples?

Back

The ratio of pears to apples is 5:4.

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

How do you express a ratio as a fraction?

Back

To express a ratio as a fraction, write the first quantity as the numerator and the second quantity as the denominator. For example, the ratio 3:2 can be expressed as 3/2.

Front

What is the ratio of pears to all fruit if there are 4 apples, 2 bananas, and 5 pears?

Back

The ratio of pears to all fruit is 5:11.

Front

What does it mean if a ratio is equivalent to another ratio?

Back

Two ratios are equivalent if they represent the same relationship between quantities, meaning they simplify to the same fraction.