Ratios, Proportions, & Percent Review

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 of the ratio 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 the terms and set the products equal to each other.

Front

What is the formula for calculating percentage?

Back

Percentage = (Part / Whole) x 100.

Front

How do you find the percentage of a number?

Back

To find the percentage of a number, multiply the number by the percentage (expressed as a decimal).

Front

What does it mean to find a part of a whole?

Back

Finding a part of a whole involves determining a specific portion of a total quantity.

Front

How can you express a ratio as a fraction?

Back

A ratio can be expressed as a fraction by placing the first quantity over the second quantity.

Front

What is the relationship between ratios and fractions?

Back

Ratios and fractions both represent a relationship between two quantities, but ratios compare two quantities directly, while fractions represent a part of a whole.

Front

How do you convert a fraction to a percentage?

Back

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