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Decimal multiplication looks difficult at first glance but is actually very simple if you know how to multiply integers. You can do decimal multiplication the same way you can multiply integers, just remember to add a comma at the end of the problem. So how exactly? This wikiHow teaches you step-by-step how to multiply decimals.
Steps
Do the math
- Take 6 in 0.06 and multiply by 3 in 0.43, we get 18. Write “8” below the number 6, write a small 1 above the number 4 to remember.
- Continue multiplying 6 by 4 in 0.43, we get 24. Take 24 plus 1 on the number 4 equals 25. The first row will be 258.
- Multiplying 0.43 by 0 equals 0, so there’s no need to write it down.
- The result of the multiplication is 258 if you omit the decimal points.
Advice
- Try it out. If the given factors are too small (like the example above), the product will be close to zero.
- You can also think of this as multiplication between integers. Do the multiplication as usual and then check the result with division. If this is correct, specify where to place the decimal point.
- When moving the decimal point from right to left in the result, if there are not enough digits, you can continue to move the comma forward and leave equal spaces.
- Multiplying decimals is no different from multiplying integers, except that you need to add the decimal point in the correct place in the result.
Warning
- It is not required to write the decimals in a straight line. This operation is only important when you are doing addition and subtraction.
wikiHow is a “wiki” site, which means that many of the articles here are written by multiple authors. To create this article, 44 people, some of whom are anonymous, have edited and improved the article over time.
This article has been viewed 3,065 times.
Decimal multiplication looks difficult at first glance but is actually very simple if you know how to multiply integers. You can do decimal multiplication the same way you can multiply integers, just remember to add a comma at the end of the problem. So how exactly? This wikiHow teaches you step-by-step how to multiply decimals.
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