If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Course: Class 8 (Foundation)>Unit 3

Lesson 2: Multiplying decimals

Intro to multiplying decimals

Multiplying decimals is easy and fun! To multiply 9 by 0.6, first rewrite 0.6 as 6 divided by 10. Next, multiply 9 by 6, which equals 54. Finally, divide 54 by 10 by moving the decimal point one place left, resulting in the answer 5.4. Practice makes perfect in mastering decimal multiplication! Created by Sal Khan.

Want to join the conversation?

• so is 9x.5=4.5?
• Yes. 9 x 0.5 = 4.5
Good job!
• I am starting grade 6 but what does BIDMAS stand for and mean
• BIDMAS is another way to express the order of operation. It stands for the following: Brackets (Parentheses), Indices (Exponents), Division, Multiplication, Addition, and Subtraction. But PEMDAS is also correct.
• how can you multiply 9 by 0.6, sure, 0.6 is in the tens but its only a fraction of a number...
• boston kailey, you can turn 9 and 0.6 into fractions, then solve them that way, after that you might need to turn it back into a decimal depending on the certain question. Hope this helps!! :)
• Just write it down, don't try to do it in your head.
• alright thanks buddy
• Emotional grammar break down
• It is 2024 is anyone here?
• im here its me
• His voice is so much deeper! love you sal!! your my hero!! ive learned so much from you!!
• Okay. Sal's our definate learning hero, ha!
• at why cna you just count how many times it goes left
• I still don't really understand. Can you please re explain it more detailed?
• The key to this is the concept that you can divide or multiply anything by 1 without changing the number. So: the problem is 3.5/1.2. Okay, we're going to multiply that by 1. 10/10=1, right? So we can totally multiply 3.5/1.2 by 10/10. You get
3.5/1.2 = 3.5/1.2 x 10/10 = 3.5 x 10/1.2 x 10 = 35/12. Then you go divide those whole numbers. You didn't actually change the problem, since you only multiplied by 1, you just made it easier!
• So the concept is for 9x0.6 is you have to do 9x6 and then move the decimal place over 1 to the left?
• also 9x0.6 is equal to 5.4