Expanded Decimal Multiplication

The video tutorial addresses a standardized math test question involving expanded decimal multiplication. It begins by introducing the problem of calculating the total weight of potatoes Amanda bought, using expanded decimal notation. The tutorial explains how to express the weight of one bag in expanded form and then multiply it by four to account for all bags. It evaluates different answer choices to identify the correct expanded notation. The lesson concludes with a summary and encouragement to continue learning math.

What is the weight of one bag of potatoes that Amanda bought?

• 5.75 pounds

• 4.75 pounds

• 6.75 pounds

• 5.25 pounds

How is the number 5.75 expressed in expanded decimal notation?

• 5 + 0.7 + 0.05

• 5 + 0.75

• 5 + 0.07 + 0.5

• 5 + 0.7 + 0.5

What does the digit '7' represent in the number 5.75?

• Seven ones

• Seven tenths

• Seven hundredths

• Seven thousandths

Which expression correctly represents the total weight of the potatoes using expanded notation?

• 4 * 5 + 4 * 0.7 + 4 * 0.5

• 4 * 5 + 4 * 7 + 4 * 0.05

• 4 * 5 + 4 * 0.7 + 4 * 0.05

• 4 * 5 + 4 * 0.07 + 4 * 0.05

Why is option D the correct choice for the expanded notation?

• It does not use expanded notation.

• It multiplies each component by 5.

• It correctly multiplies each component by 4.

• It uses the wrong place values.