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Because if you don't line them up you will get a total different answer.
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∙ 12y ago
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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.
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
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.
Why it is important to line up decimal numbers by their play value when you add or subtract them?
This is true for adding and subtracting ALL numbers, not just decimal representations.
When multiplying decimals do you line them up?
Yes you do that is very important when doing a decimal problem.* * * * *It is important for other basic binary operations but NOTmultiplication.
Why it is important to line up decimal numbers?
Because 42.0+7.8 is different from adding 42+78. it makes adding easier!
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.
Why is it important to line up the decimal points when you add decimals?
The importance of lining up the decimals is so you can just add from bottom to top it makes things a lot easier.
How do you multiply by a decimal?
line up the numbers and decimals multiply regularly then bring the decimal down
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...
Why is it important to line up decimals?
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.
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.^
