Ratios/Rates and Unit Rates

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 gallon).

Front

How do you calculate miles per gallon (mpg)?

Back

To calculate mpg, divide the total miles driven by the total gallons of gas used.

Front

If a car travels 231 miles using 7 gallons of gas, what is the mileage?

Back

33 miles per gallon.

Front

What is the price per item if 9 candy bars cost $13.50?

Back

$1.50 per candy bar.

Front

What is the ratio of blue marbles to red marbles if there are 3 blue and 7 red marbles?

Back

3 : 7.

Front

How do you express the ratio of red LEGOs to yellow LEGOs if there are 3 red and 6 yellow?

Back

1 : 2.

Front

What is the ratio of triangles to squares if there are 4 triangles and 12 squares?

Back

1 : 3.

Front

How do you find the unit price of an item?

Back

Divide the total price by the number of items.