Adding and Subtracting Percents

a special ratio that compares a number to 100 using the % symbol; a rate per 100

• rate

• percent

• ratio

• unit

The amount by which the cost decreased from the initial value, expressed as a percent.

• percent increase

• unit rate

• percent decrease

• coupon

The amount by which the cost increased from the initial value, expressed as a percent.

• unit rate

• percent increase

• percent decrease

• sales tax

Sales tax, when you buy something, is an amount that is set by the government and______________onto the original price

• rate

• subtracted

• multiplied

• added

If 15% of a number is 30, what is the number?

• 100

• 150

• 250

• 200

What is 30% of 150?

• 45

• 50

• 55

• 60

If 20% of a number is 40, what is the number?

• 100

• 200

• 150

• 250

If 45% of a number is 90, what is the number?

• 150

• 200

• 250

• 300

What is 35% of 180?

• 63

• 70

• 75

• 80

What is 25% of 80?

• 20

• 30

• 15

• 40