Ratios, Proportions, & Percent Review

Front

What is a ratio?

Back

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

Front

How do you calculate a proportion?

Back

A proportion is an equation that states two ratios are equal. To solve for a missing value, cross-multiply and set the products equal to each other.

Front

What is the formula to find a percentage?

Back

Percentage = (Part / Whole) x 100.

Front

If Sam rented 6 movies each month for 5 months, how many movies did he rent in total?

Back

30 movies.

Front

How many miles will Jenny run if she runs 28 miles per day for 35 days?

Back

980 miles.

Front

Convert 3 miles to feet. How many feet are in 3 miles?

Back

15,840 feet.

Front

What is the missing value (x) if the ratio is 3:1 and the known value is 3?

Back

x = 1.

Front

What percentage of 20 candy bars is 12?

Back

60%.

Front

What is a unit rate?

Back

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

Front

How do you find the total number of items rented over several months?

Back

Multiply the number of items rented per month by the number of months.