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Answered 2011-02-04 00:19:45

you only line the decimals up when you are subtracting or adding not when you are multiplying im not sure about division...

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Why is it important to line up the decimal point before or after adding a decimal?

That is because if you don't, you will get the wrong answer. It is ALWAYS important to LINE up the decimals.


Why is it important to line your decimal up?

Because if you don't line them up you will get a total different answer.


Do you line up decimal points when multiplyig?

Unlike addition, there is no need to line up the decimal points. Just multiply ignoring the decimal points. When you are done, move the decimal point of the result to the left equal to the number of digits after the decimal point for both multiplicands.


Explain why it is important to line up decimal numbers by their place value when you add or subtract them?

explain why it is important to line up decimal numbers by their place value when you add or subtract them


How do you multiply by a decimal?

line up the numbers and decimals multiply regularly then bring the decimal down


How do you add decimal numbers?

Line up the decimal numbers like this, 100.5 + 9.0 then add normally and put in the decimal right below the decimal obove.^


Why do you line up the decimal numbers?

We line up the decimal numbers so as to get accurate results. Example: 0.2 + 7.31 + 1.054 * It is easier to add this vertically. 0.2 7.31 1.054 ==== 8.564


Do you have to line up the decimal when you are adding?

You have to line up the decimal when adding but not when multiplying. Example: This one is adding 23.56+89.45 23.56 89.45 This one is multiplying 23.54*4.506 23.54 4.506


Why do you line up decimal points?

It is easier to add up numbers. It may also be easier to spot errors where the decimal point is misplaced.


Do you have to line up the decimal?

in a multiplication problem, you don't have to. in addition & subtraction, you do


Is 0.52 less than 0.25?

No it is more. If you line them up then compare for the biggest number from left to right it is obvious. (Line them up from the decimal)


Why do you need to line up the decimal points before comparing and ordering with decimals?

Because the number in decimal form has a different value based on their position from the decimal point. Every one number left of decimal point it will be valued 10 times. If you don't line them up you can compare them because they might have a different value and you will end up messing your calculation.


What is 0.88 plus 0.035 equals to?

To add decimal numbers you line up the decimal points... _0.88 +0.035 --------- _0.915


How to solve 11.14 plus 3.111?

line up the decimal points, and add them


Why do you line up the decimal points when adding and subtracting?

you have to line up the decimal points because you need to keep each place value in the same column so when you add or subtract you wont make any errors


Do you have to line up the decimals when you subtract?

Line up the numbers in such a way that the decimal points are aligned. . Example: 567.89 - 23.4 567.89 - 23.4 ===== 544.49


Why is it not necessary to line up the decimal point when multiplying two numbers?

Because the number of digits after the decimal place in a product does not require that.


How do you order decimal least to greatest?

Line them up, one below the other, with the decimal points in the same column. Ordering them is then straightforward.


What is the rules adding decimal?

Line up the decimal points in a vertical column. Then add the numbers while ignoring the decimal point. Finally, put a decimal point in the answer in the same column as for the summands.


What is the line over a repeating decimal?

The line over a repeating decimal is called the vinculum.


Why is it important to line up decimal?

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.


Why is it important to line up the decimal?

It is important for you to line up the decimals vertically the way I did above so that you can keep track of the place-value position of the digits.


How do you solve 2.5 - 1.2?

You line up the decimal points and subtract, and carry the decimal point down to the same position in your answer: 1.3


How do you add decimals to thousandths?

You line up the decimals with the thousandths and put the decimal straight down from where it is and just add with the decimal in the same spot.


What is the line over a repetitive decimal?

If there is a line over a decimal, it means the decimal is repetitive. If you are typing it would look like this... .7