Solving Ratios and Proportions

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, expressed as 'a to b' or a:b.

Front

What is a proportion?

Back

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

Front

How do you find the cross products of two ratios?

Back

Multiply the numerator of the first ratio by the denominator of the second ratio and vice versa.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per one unit of another quantity.

Front

How do you determine if two ratios form a proportion?

Back

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

Front

What is the unit rate for 100 books and 5 boxes?

Back

20 books per box.

Front

What is the unit rate for 360 dollars for 6 hours?

Back

$60 per hour.

Front

If the ratios 35:16 and 5:2 are compared, what do you check to see if they form a proportion?

Back

Check if the cross products are equal.

Front

What are equivalent ratios?

Back

Equivalent ratios are two or more ratios that express the same relationship between quantities.

Front

How can you simplify a ratio?

Back

Divide both terms of the ratio by their greatest common factor.