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 express a ratio as a fraction?

Back

To express a ratio as a fraction, write the first quantity as the numerator and the second quantity as the denominator.

Front

What is a rate?

Back

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

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is one unit, such as 60 miles per hour.

Front

What does it mean for two rates to be equivalent?

Back

Two rates are equivalent if they represent the same relationship between quantities, meaning they simplify to the same unit rate.

Front

How do you find the cost per item?

Back

To find the cost per item, divide the total cost by the number of items.

Front

What is a proportion?

Back

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

Front

How can you determine if two ratios form a proportion?

Back

You can determine if two ratios form a proportion by cross-multiplying and checking if the products are equal.

Front

What is the simplest form of a ratio?

Back

The simplest form of a ratio is when both quantities are divided by their greatest common factor.

Front

How do you convert a ratio to a percentage?

Back

To convert a ratio to a percentage, divide the first quantity by the second quantity and multiply by 100.