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# Strategies for multiplying decimals and whole numbers

We can use different methods for multiplying whole numbers with decimals. The first method involves converting the decimal into a fraction and multiplying the numerators and denominators together. The second method involves breaking the decimal into different place values and multiplying each part by the whole number. Estimating the answer beforehand can help check for accuracy. Created by Sal Khan.

## Want to join the conversation?

• Bro I just turn the speed up and get points super fast.😅
• I think it's not cheating if you're watching it and you're really absorbing the information but if you're just trying to get points super fast, like you're saying, then I don't think it's that helpful or educational. And you're right, they do give the option to speed up the video, but if you really need the help, which I sometimes do, then it's not good to speed it up. I'll admit that I also do this sometimes, but not always now that I'm nearing a part where I'll need help.
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• If anyone is stuck, an example is 9 x 2.0 how do you solve it put the answer in the comments.
• 18 because 2.0 is exactly the same as 2.
• 1 vote are you crazy
• This is a learning site. Please do not talk about topics that doesn't have something to do with math, or khan Academy.
• What is 3,500x6
• One way to multiply by 6 is to multiply by 2 and multiply by 3.

3,500 x 2 = 7,000.
7,000 x 3 = 21,000.

Have a blessed, wonderful day!
• Another Example is: 45 x 0.8 = first multiply your 2 numbers, ignore the zero and decimal. multiply 45 x 8= ? then put the decimal between it
• yo you can get points really fast on 2x speed yes sir
• thank you
(1 vote)
• I was so confused how to multiply decimals yesterday and now i"m getting all the questions right!? (please upvote me so i can earn the 25 votes badge!)