Ratios, Rates, Percent, and Proportions Exam

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 convert a fraction to a percentage?

Back

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

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units, such as miles per hour or price per item.

Front

Define 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

If 3 out of 5 students passed a test, what percentage passed?

Back

60% passed (3/5 = 0.6, and 0.6 x 100 = 60).

Front

What is the relationship between ratios and fractions?

Back

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

Front

How do you find a missing value in a proportion?

Back

Set up the proportion, cross-multiply, and solve for the missing value.

Front

What is the difference between a ratio and a rate?

Back

A ratio compares two quantities of the same kind, while a rate compares two quantities of different kinds.