Writing Percent of Decrease Algebraically

The video tutorial explains how to calculate a 30% decrease in donations received by a group. It guides viewers through understanding the problem, converting percentages to decimals, and forming algebraic expressions. The tutorial also evaluates answer choices to identify the correct expressions representing the decreased amount. By combining like terms, the video concludes with the correct algebraic representation of the percent decrease.

What is the main focus of the problem discussed in the video?

• Determining the expressions for a 30% decrease in donations.

• Identifying the total number of donations received this year.

• Calculating the total donations received last year.

• Finding the percentage increase in donations.

How is 30% represented as a decimal in the video?

• 3.0

• 0.03

• 0.3

• 0.30

What operation is used to represent 'less' in the algebraic expression?

• Multiplication

• Division

• Addition

• Subtraction

Which expression correctly represents 30% less of D?

• D / 0.30

• D + 0.30D

• D - 0.30D

• 0.30D

What is the final expression for the amount received this year?

• 0.70D

• D + 0.70D

• D - 0.70D

• 1.30D