Ratios and Proportions

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity.

Front

How do you find a unit rate?

Back

To find a unit rate, you must divide the quantity by the number of units.

Front

What is a ratio?

Back

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

Front

What are proportions?

Back

Proportions are equations that state that two ratios are equal.

Front

How can you express a proportion mathematically?

Back

A proportion can be expressed as a fraction equation, such as a/b = c/d.

Front

What is the relationship between ratios and proportions?

Back

Ratios are used to compare two quantities, while proportions show that two ratios are equivalent.

Front

What is the formula for finding a missing value in a proportion?

Back

The formula is cross-multiplication: a/b = c/d leads to ad = bc.

Front

What does it mean if two ratios are equivalent?

Back

If two ratios are equivalent, it means they represent the same relationship between quantities.

Front

How can you determine if two ratios are proportional?

Back

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

Front

What is an example of a unit rate in real life?

Back

An example of a unit rate is speed, such as miles per hour.