Multiplying Decimals

This lesson teaches how to multiply decimals by treating them as whole numbers initially, then placing the decimal point in the product based on the total number of decimal places in the factors. It includes an example of multiplying 8/10 by 7/10, resulting in 56/100, and another example with 12.4 and 3.6, resulting in 44.64. Estimation is used to predict the product, aiding in verifying the result. The lesson concludes with a summary of the traditional method for decimal multiplication.

What is the first step in finding the product of two decimals?

How do you determine where to place the decimal point in the product?

What is the product of 8/10 and 7/10?

What is a reasonable estimate for the product of 12 and 4/10 times 3 and 6/10?

How do you check if your decimal placement in the product is correct?

What is the final product of 12 and 4/10 and 3 and 6/10?

What method do you learn to calculate the product of two decimals?