Rates, Ratios, proportions and percents

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

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per one unit of another quantity.

Front

How do you find a unit rate?

Back

To find a unit rate, divide the first quantity by the second quantity to determine how much of the first quantity corresponds to one unit of the second quantity.

Front

What is a percent?

Back

A percent is a ratio that compares a number to 100, often used to express how much of a whole is represented by a part.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and then multiply the result by 100.

Front

What is the ratio of boys to girls if there are 8 boys and 12 girls?

Back

The ratio of boys to girls is 2 to 3.

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 2 to 3.

Front

What is the difference between a ratio and a fraction?

Back

A ratio compares two quantities, while a fraction represents a part of a whole.

Front

If there are 10 red marbles and 5 blue marbles, what is the ratio of red to blue marbles?

Back

The ratio of red to blue marbles is 2 to 1.