Ratios Rates Proportions Percents

Find the missing value in the proportion.

1/c = 6/12

Find the missing value in the proportion.

n/4 = 18/6

A ______________________ is a comparison of two numbers by division.

A dozen eggs cost $1.25 at one market. At a competing market, 1 1/2 dozen eggs cost $2.00. Which is the better buy?

• one dozen eggs

• 1 1/2 dozen eggs

• they cost the same

A rate that has 1 unit in the denominator is called a:

• ratio

• unit rate

• percent

• proportion

A percent is a ratio of a number to ______.

Write 40% as a fraction in simplest form.

Write 25% as a fraction in simplest form.

Write 72% as a decimal.

Write 80% as a fraction in simplest form.