7th Grade Percent Unit Review

How do you calculate a percentage of a number?

• Multiply the number by the percentage in decimal form.

• Add the percentage to the number.

• Divide the number by the percentage.

• Subtract the percentage from the number.

How do you convert a fraction to a percent?

• Multiply the fraction by 100

• Add the numerator and denominator

• Divide the numerator by the denominator and then multiply by 100

• Subtract the numerator from the denominator

How do you find the original price before a discount?

• Divide the sale price by (1 - discount rate)

• Multiply the sale price by (1 + discount rate)

• Add the discount amount to the sale price

• Subtract the discount amount from the sale price

If a product's price increases from $50 to $60, what is the percent increase?

• 10%

• 15%

• 20%

• 25%

What is the formula for calculating percent decrease?

• Percent decrease = @@\frac{(original value - new value)}{original value} \times 100@@

• Percent decrease = @@\frac{(new value - original value)}{original value} \times 100@@

• Percent decrease = @@\frac{(original value + new value)}{original value} \times 100@@

• Percent decrease = @@\frac{(original value - new value)}{new value} \times 100@@

What is the formula for calculating percent increase?

• Percent increase = @@\frac{(new value - original value)}{original value} \times 100@@

• Percent increase = @@\frac{(original value - new value)}{original value} \times 100@@

• Percent increase = @@\frac{(new value + original value)}{original value} \times 100@@

• Percent increase = @@\frac{(new value - original value)}{new value} \times 100@@

What does a 40% discount mean?

• A 40% discount means that the price is reduced by 40% of the original price.

• A 40% discount means that the item is free after the discount.

• A 40% discount means that the price is increased by 40% of the original price.

• A 40% discount means that you pay 40% of the original price.

What is a percent?

• A ratio expressed as a fraction of 100, representing a part of a whole.

• A measurement of temperature in Celsius.

• A type of interest rate used in loans.

• A unit of distance measurement.

• It means that the attendance increased by 12% from the original attendance x.

• It means that the attendance decreased by 12% from the original attendance x.

• It means that the attendance remained the same as the original attendance x.

• It means that the attendance is half of the original attendance x.

How do you express 15% as a decimal?

• 0.05

• 0.10

• 0.15

• 0.20