Ratios and Rates Flashcard

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 rate?

Back

A rate is a specific kind of ratio that compares two different units, such as speed (miles per hour) or price (dollars per pound).

Front

What is the unit rate?

Back

The unit rate is the value of a ratio when the second quantity is 1. It shows how much of one quantity corresponds to one unit of another quantity.

Front

If there are 3 red marbles and 9 blue marbles, what is the ratio of red to blue marbles?

Back

1 to 3

Front

If a car travels 150 miles in 3 hours, what is the unit rate in miles per hour?

Back

50 miles per hour

Front

What is the ratio of 10 to 25 in simplest form?

Back

2 to 5

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

Back

2 to 3

Front

How do you convert a ratio to a fraction?

Back

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

Front

What is the ratio of 8 apples to 4 oranges?

Back

2 to 1