Unit 5 & 6: Percents & Ratios - Quiz

The sales price after a discount is found by:
Step 1:

• Multiply the original price by the discount percentage.

• Multiply the original price by (1 minus the discount percentage).

• Subtract the discount percentage from the original price.

• Add the discount percentage to the original price.

How do you find the amount of the discount?
Choose the correct process:

• Subtract the sale price from the original price.

• Subtract the original price from the sale price.

• Multiply the original price by the discount percentage.

• Divide the discount percentage by the original price.

Find the original price given the sales price by dividing the sales price by:

• 1 - discount rate

• discount rate

• sales price

• 1 + discount rate

What is the percent change formula?

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The steps to find percent change are:

• Subtract the larger value from the smaller value, divide the result by the new value, and then multiply by 100.

• Subtract the smaller value from the larger value, divide the result by the original value, and then multiply by 100.

• Multiply the new value by the original value, then add 100.

• Add the original and new values together, then divide by 100.

The percent equation is:

• percent =
  Part/Whole

• percent =

  Whole/Part

• percent =

  Part × Whole

• percent =

  100 × Part/Whole

5 is 40% of what number?

• 12.5

• 10

• 15

• 20

Determine whether the table shows a unit rate greater than 1 pound per cubic foot.

• True
• False

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