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Lesson 7: Multiplying decimals

# Developing strategies for multiplying 2-digit decimals

Learn to multiply decimals by treating them as fractions. Practice converting decimals to fractions and then multiplying like usual. Then convert the fractions back to decimals to solve!

## Want to join the conversation?

• Is there an easier way to do this? I mean, what if you don't have a piece of paper and can't write that well on the computer? Is there some way you could do this in your head?
• How do you multiply a big whole number, like 217 with a long decimal like 19.45? I've looked for a while for a video on that, but can't find one. I'm guessing you just do what Sal said but don't count any places over the decimal. But I'm not sure so please respond.
• One way we can multiply those numbers or digits is area model or standard
• Can't you just use the standard algorithm for this or just multiply them without decimals and add the m later on.
• Yes, you could, but the will lower you concept of you understanding how multiplying with decimals work. Try learning the right way first then using any tricks.
• What are other strategies?
• Can somebody please explain how to do this because I’m struggling with this right now it’s pretty hard for me to understand this.
• how do you do it when the first digit in the number is 0?
• What is 0.24 x 0.0009897 ? How do U solve that?