Ratio and Proportions

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Front

How do you simplify a ratio?

Back

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

Front

What is a proportion?

Back

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

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply and then divide to find the unknown value.

Front

What is the formula for finding a missing value in a proportion?

Back

If a/b = c/d, then ad = bc. You can rearrange to find the missing value.

Front

What does it mean to round a number?

Back

Rounding a number means adjusting it to the nearest specified place value, such as the nearest tenth.

Front

How do you find the height of an object using ratios?

Back

You can use similar triangles and the ratio of corresponding sides to find the height of an object.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first term is the numerator and the second term is the denominator.

Front

How do you convert a ratio to a percentage?

Back

To convert a ratio to a percentage, divide the first term by the sum of both terms and multiply by 100.

Front

What is the ratio of red letters to blue letters if there are 3 red and 2 blue?

Back

The ratio of red letters to blue letters is 3:2.