Unit 1 Map 1C Flashcard Review - Ratios, Unit Rates, Proportions

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'per unit' (e.g., miles per hour).

Front

How do you find a unit rate from a total amount?

Back

To find a unit rate, divide the total amount by the number of units. For example, if you earn $30 for 4 hours of work, the unit rate is $30 ÷ 4 = $7.50 per hour.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal. For example, if a:b = c:d, then a/b = c/d.

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply and then divide. For example, if a/b = c/d, then ad = bc.

Front

What is the ratio of games played to games lost if a team played 40 games and lost 5?

Back

The ratio is 8 to 1.

Front

If the ratio of red jelly beans to green jelly beans is 14 to 8, what is the ratio of green to red?

Back

The ratio of green to red jelly beans is 4 to 7.

Front

What is 60% expressed as a fraction?

Back

Front

If there are 5 chocolate shakes for every 8 strawberry shakes, what is the ratio of strawberry shakes to total shakes?

Back

The ratio of strawberry shakes to total shakes is 8 to 13.