Multiplying Decimals by Decimals

The video tutorial explains how to multiply decimals using long multiplication. It begins with an example of multiplying 3.5 by 6.1, demonstrating the importance of lining up numbers correctly and using placeholders. The tutorial then provides another example with 2.3 and 4.04, showing how to handle decimal points by counting the digits after them in the factors. Finally, the video offers practice problems for viewers to solve on their own.

What is the first step in multiplying decimals using long multiplication?

• Multiply the numbers by 100

• Divide the numbers by 10

• Ignore the decimal points and treat as whole numbers

• Add the numbers together

When multiplying 3.5 by 6.1, what is the result before adjusting for decimal places?

• 213.5

• 2135

• 21.35

• 2.135

How many decimal places should the final answer have when multiplying 3.5 by 6.1?

• Two

• Four

• One

• Three

In the example of multiplying 2.3 by 4.04, what is the result before adjusting for decimal places?

• 9.292

• 929.2

• 92.92

• 9292

How many decimal places should the final answer have when multiplying 2.3 by 4.04?

• Two

• Four

• Three

• One

What is the correct answer for the calculation 5.1 * 2.3?

• 11.73

• 11.73

• 11.73

• 11.73

What is the correct answer for the calculation 2.7 * 3.13?

• 8.451

• 8.451

• 8.451

• 8.451