Ratios, Unit rates, percents

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

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

A unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'per'.

To find a unit rate, divide the first quantity by the second quantity to get the value for one unit.

A percent is a ratio expressed as a fraction of 100, indicating how many parts out of 100.

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

An equivalent ratio is a ratio that expresses the same relationship between two quantities, even if the numbers are different.

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

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

To solve a ratio problem, set up a proportion and cross-multiply to find the missing value.