Vocabulary
A ratio that compares a number to 100
percent
Express 1/2 as a percent
50%
20% of 180
36
Mrs. Benitez earns $3,400 every month. She spends 25% of her earnings on rent. How much does she spend on rent?
$850
the smallest number of all the common multiples of the denominators
Least Common Denominator
Express 9% as a decimal
0.09
48% of 725
348
Of the 800 people at a concert, 42% of them are adults. How many adults are at the concert?
336 Adults
an equation where a percent is equal to an equivalent ratio
Percent Proportion
Express 320% as a mixed number in simplest form
4% of 200
8
A table costs $350. There is also a sales tax of 7%. How much will the tax cost?
$24.50
An equation that states two ratios are equivalent
Proportion
Write 88% as a fraction in simplest form
22/25
7.5% of 600
Howard opens a savings account with a deposit of $800. The bank will pay him 3% interest per year. How much interest will he receive at the end of 2 years?
$48
What is a rational number?
A number is rational if it can be written as a fraction
Express 0.07% as a decimal and a fraction
0.0007 and 7/10,000
150% of 220
330
The amount of water in a bottle is reduced by 85% to 120 milliliters. How much water was originally in the bottle?
800mL