How to Divide Decimals by 10, 100 & 1000

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Dividing decimals by 10, 100 and 1000 is all about moving the decimal point to the left or right. Divide decimals by 10, 100 and 1000 with help from an experienced mathematics professional in this free video clip.

Part of the Video Series: Trigonometry, Graphs, & Other Math Tips
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Video Transcript

Hi. I'm Walter Unglaub and this is how to divide decimals by 10, 100 and 1,000. So if we're give a decimal such as 0.42 for example, and we want to divide this number by 10 all we have to do is recognize that there is a decimal immediately to the right of the zero of the 10 and we just have to move the decimal point one place over and we do the same for the numerator to be consistent. So we have .042 divided 1 which is simply equal to .042. The same trick can be applied for dividing 0.42 our decimal by 100 and also 1,000. So if I have 0.42 divided 100, I move move the decimal point 2 places to the left so that it is immediately to the right of the 1 and I have to follow suit with the numerator. So I end up with 0.0042. And finally if I divide by a 1,000 and I have 0.42 divided 1,000 and I move the decimal point 3 places to the left and do the same with the numerator, 1, 2, 3. So I fill in these gaps with zeros and I end up with 0.00042. My name is Walter Unglaub and this how to divide decimals by 10, 100 and 1,000.


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