Ratios/Rates/Unit Rate

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 as a fraction a/b.

Front

How do you simplify a ratio?

Back

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

Front

Express the ratio 18 ounces to 3 cups as a fraction in simplest form.

Back

6 to 1.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units, such as miles per hour or dollars per item.

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is one unit, such as 60 miles per hour.

Front

Which rate is equivalent to $9 per hour?

Back

$27 in 3 hours.

Front

How do you find the better buy between two products?

Back

Calculate the unit price for each product and compare them; the lower unit price indicates the better buy.

Front

If an eight pack of juice boxes costs $4.79 and a 12 pack costs $6.59, which is the better buy?

Back

The 12 pack is the better buy.

Front

What is the ratio of pears to all fruit if there are 4 apples, 2 bananas, and 5 pears?

Back

5:11.

Front

How do you express a ratio of boys to girls if there are 7 boys and 9 girls?

Back

The ratio of girls to boys is 9 to 7.