Rewriting Percent Decrease as a Multiplication Problem

The video tutorial explains how to express a percent decrease as a multiplication problem. It begins by introducing the concept and reviewing how to convert percentages to decimals. Common mistakes in understanding percent decrease are highlighted. The tutorial provides examples, including calculating discounts of 25% and 30% on items, demonstrating how to express these as mathematical expressions. The lesson concludes with a summary of the key concepts learned.

What is the correct way to calculate the amount paid after a discount?

• Multiply the discount percentage by 100%

• Divide the discount percentage by 100%

• Subtract the discount percentage from 100%

• Add the discount percentage to 100%

If an item costs d dollars and is on sale for 25% off, what is the expression for the sale price?

• d / 0.25

• d * 0.25

• d - 0.25d

• d + 0.25d

In the expression d - 0.25d, what does 0.75d represent?

• The tax amount

• The original price

• The discount amount

• The sale price

How can a 30% discount on sneakers be expressed as a product of the original price s?

• s + 0.3s

• 0.7s

• s - 0.3s

• 0.3s

What is the expression for the sale price of sneakers originally priced at s dollars with a 30% discount?

• s / 3/10

• s + 3/10s

• s - 3/10s

• s * 3/10