Ratios, Rates, Unit Rates, Proportions Test 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 unit rate?

Back

To calculate a unit rate, divide the quantity by the number of units. For example, if a car travels 120 miles in 2 hours, the unit rate is 120 miles ÷ 2 hours = 60 miles per hour.

Front

What is a rate?

Back

A rate is a ratio that compares two different kinds of quantities, often involving time. For example, speed is a rate that compares distance to time.

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is 1. For example, if a car travels 150 miles in 3 hours, the unit rate is 50 miles per hour.

Front

What is the ratio of wins to losses if a team has won 11 games and lost 1?

Back

The ratio of wins to losses is 11:1.

Front

How do you determine which deal is better when comparing prices?

Back

To determine which deal is better, calculate the price per unit for each option and compare them. The lower price per unit is the better deal.

Front

What is the formula for finding a proportion?

Back

A proportion states that two ratios are equal. It can be expressed as a/b = c/d, where a, b, c, and d are numbers.

Front

If a car travels 440 miles in 8 hours, what is the unit rate?

Back

The unit rate is 55 miles per hour.

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.

Front

What does it mean if a rate is expressed as 'miles per hour'?

Back

It means the number of miles traveled in one hour.