Ratio, Rates, and Unit Rate 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

What is a rate?

Back

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

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is one unit, such as 50 miles per hour or $3 per item.

Front

How do you find the unit price?

Back

To find the unit price, divide the total cost by the number of items. For example, if 9 pieces of candy cost $2.25, the unit price is $2.25 ÷ 9 = $0.25 per piece.

Front

What is a complex fraction?

Back

A complex fraction is a fraction that has a fraction in its numerator, denominator, or both.

Front

Convert 4 yards to inches.

Back

4 yards = 144 inches (since 1 yard = 36 inches, so 4 x 36 = 144).

Front

If Jack earns $46.80 for 6 hours of work, how do you calculate his hourly rate?

Back

To calculate the hourly rate, divide the total earnings by the number of hours worked: $46.80 ÷ 6 = $7.80 per hour.

Front

What is the difference between part-to-part and part-to-whole ratios?

Back

Part-to-part ratios compare two parts of a whole, while part-to-whole ratios compare one part to the entire whole.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common factor.

Front

What is the formula for calculating a unit rate?

Back

Unit Rate = Total Quantity / Number of Units.