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Answered 2010-05-04 15:55:45

Yes.

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When do you need to write zero as a placeholder when adding and subtracting decimals?

Adding decimal same as adding whole numbers


What happens to the decimal in adding and subtracting decimals?

When you are adding and subtracting decimals, youare +/- ing the whole numbers and tenths in the number. the decimal might go away ex: 1.3-0.3=1 or it won't ex: 1.9-0.3=1.6


What is the rule for significant figures when adding or subtracting decimals?

When adding and/or subtracting, your answer can only show as many decimal places as the measurement having the fewest number in the decimal places.


How is adding and subtracting decimals similar to and different from adding and subtracting whole numbers?

You write down the numbers you want to add and subtract, making sure the decimal points are aligned. Then, you add (or subtract) EXACTLY as you would add or subtract integers. The decimal point in the solution should be aligned with the decimal points in the original numbers.


When adding or subtracting decimals always do what?

First you write the decimals one under the other, in such as way that the decimal points are aligned.


How are adding subtracting decimals different from multiplying them?

They aren't. The rules are the same as those for adding/subtracting or multiplying integers. Just be careful of the decimal point's location.


Do decimal points need to be lined up when adding and subtracting decimals?

Yes, unless you are an expert.


Why do you line up the decimal when adding or subtracting decimal numbers?

Yes, When Adding and Subtracting decimals you should line up the decimals. You need to keep each place value in the same column, the same as when you add whole numbers you keep the ones column lined up, same for the tens, etc. Lining up the decimal points makes sure that the tenths column is kept together, same for the hundredths, and so on.


When subtracting or adding numbers in scientific notation why do the exponents need to be the same?

This is effectively the same as lining up the decimal points when adding or subtracting ordinary decimal fractions.


What is the first step when you are adding and subtracting decimals?

Write them one above the other with the decimal points aligned.


When multiplying decimals with whole numbers do you line up the whole numbers?

Hey awesome Question. The answer is no you do not have to line up the decimals when multyping only when adding and subtracting. The main thing is when you multiply make sure you put the decimal in the right place in your answer. YOu count how may places their are behind the decimals in BOTH numbers then you make sure their are that many places behind the decimal in you answer. :)


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...


How is adding decimals like adding whole numbers?

It can be same because it,s just the decimal


What are the three rules of adding and subtracting decimals for 5 grade?

line up the decimal point when your adding and subtracting. add annex a zero when you have extra number. sometimes you can use a number line.


What is the key of adding and subtracting decimals?

The key would be to add (00.) before your decimal. IE 00.41 + 00.95 = 01.36


When adding and subtracting decimals will your answer be a mixed number?

Yes


Why is it important to align decimal point when adding or subtracting decimal numbers?

Because if you dont , your answer will be a whole number and that will make your answer wrong


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.


How are decimals used as a carpenter?

adding subtracting multiplying and dividing


When adding and subtracting decimals you must?

add them or subtract them, as appropriate!


How is adding decimals similar to adding whole numbers?

Adding whole numbers is the addition of decimals where the decimal part is zero; in both cases the digits are place value aligned meaning that the decimal points, which lies between the units (or ones) and tenths columns, are aligned - in the whole number the decimal point is "hiding" at the end.


Rules in adding or subtracting scientific notation?

- when adding or subtracting in scientific notation, you must express the numbers as the same power of 10. This will often involve changing the decimal place of the coefficient.


How can decimals be added together?

When adding numbers with decimals always make sure the decimal points are lined up. That is the only way to be sure that the person will be adding them up right.


Where to place a decimal when adding mixed decimals?

The decimal point, which I think you meant, is lined up vertically in a row of numbers to be summed.


Why do you estimate when adding or subtracting decimal numbers?

In more than 40 years as a mathematician, I have never needed to do so.