Multiplying Decimals Using the Standard Algorithm

This lesson teaches how to multiply decimals using the standard algorithm. It begins with a review of multiplication concepts using array models and base 10 blocks. The lesson then explains the differences between multiplying whole numbers and decimals, emphasizing that decimal products are smaller than the factors. Detailed steps for multiplying decimals are provided, including estimating the product, stacking numbers, and placing the decimal point. Examples illustrate these steps, and the lesson concludes with a summary of the key points.

What happens to the product when both factors are decimals?

What is the final product of 4 and 8/100 times 8/10?

Describe the process of converting decimals to whole numbers before multiplying.