Unit 7 Review (Ratios, Rates, Proportions, and Percents)

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two quantities with different units.

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is 1 unit.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you determine if two ratios form a proportion?

Back

Two ratios form a proportion if their cross products are equal.

Front

If a skydiver falls 144 feet in 3 seconds, how far does he fall in 1 second?

Back

48 feet.

Front

If a pump moves 42 gallons in 7 minutes, what is the unit rate?

Back

6 gallons per minute.

Front

What is the formula to find a unit rate?

Back

Unit Rate = Total Quantity / Number of Units.

Front

What is the difference between a ratio and a proportion?

Back

A ratio compares two quantities, while a proportion states that two ratios are equal.

Front

What does it mean if two ratios are not a proportion?

Back

It means that the cross products of the ratios are not equal.