Vocabulary
A part to whole ratio where the whole is always 100.
Percent
Express 1/2 as a percent and a decimal
50%, 0.5
What is 20% of 180?
36
A number which has a whole number and a fraction
Mixed number
Express 9% as a decimal and a fraction
0.09, 9/100
48% is 348 of what number?
725
There were 336 adults at the concert. If this is 42% of the people attending the concert, how many people attended the concert?
800 people at the concert
Two ratios that name the same comparison ex: 1/2 = 50/100
Equivalent Ratios
Express 320% as a mixed number in simplest form and as a decimal
3 1/5, 3.2
What percent is 8 of 200?
4%
A table costs $350. There is also a sales tax of 7%. How much will the tax cost?
$24.50
A fraction where the numerator is bigger than the denominator
Improper Fraction
88% expressed as a fraction in simplest form and as a decimal
22/25, 0.88
What is 90% of 1,350?
1,215
A toy manufacturer estimates that 5% of its products are defective. If it produces 50 defective toys each day, how many toys are produced in all each day?
1000 toys produced in all each day
Two equivalent ratios
Proportion
Express 42/70 as a percent and as a decimal
60%, 0.6
150% is 330 of what number?
220
120mL of water are drunk out of the bottle. If the bottle holds 800 mL, what percent of the water was drunk?
15%