Ratios/Ratio Tables

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 does a ratio of 3:4 mean?

Back

A ratio of 3:4 means that for every 3 units of the first quantity, there are 4 units of the second quantity.

Front

If the ratio of boys to girls is 2:3, how many girls are there if there are 10 boys?

Back

If the ratio is 2:3, then for every 2 boys, there are 3 girls. If there are 10 boys, there are 15 girls.

Front

What is a ratio table?

Back

A ratio table is a table that displays pairs of numbers that form equivalent ratios.

Front

How can you find an equivalent ratio?

Back

To find an equivalent ratio, multiply or divide both terms of the ratio by the same non-zero number.

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 30 tenants and the ratio of tenants to cars is 3:5, how many cars are there?

Back

If the ratio is 3:5, then for every 3 tenants, there are 5 cars. Therefore, there are 50 cars.

Front

What is the ratio of green marbles to red marbles if there are 3 green marbles and 1 red marble?

Back

The ratio of green marbles to red marbles is 3:1.

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.