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It is irrelevant if multiplying or dividing decimal numbers. For addition and subtraction it is not sufficient: you need to line up the decimal points as well as the digits according to their place values. If you intend to simply align the decimal points then you may as well not bother. This is to ensure that addition or subtraction is carried out for digits with the same place value.
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Do you line up decimals when you multiply?
no
Do you have to line up the decimals when multiplying?
No, it is not necessary. But it does help to be tidy.
When do you line up the decimal?
you only line the decimals up when you are subtracting or adding not when you are multiplying im not sure about division...
What do you do when you add or subtract decimals?
Adding and subtracting decimals is easy. When you put the numbers one above the other, line up the decimals vertically and treat as you would any whole number just keep the decimals in line and bring it straight down to your answer.
Why do you line up the decimals when adding decimals?
Because left of the decimal point goes times 10 for every position and right of the decimal point goes times -10 for every position.
