You need to line up decimals for additional and subtraction. For multiplication, you don't need to line them up - in fact, it would serve no useful purpose.
line up the decimals together
Just make sure you line up the decimals
When you are lining up decimals to add or subtract, always line the decimals up before doing the problem. An example is: 1.468 + 0.0004 would be lined up this way: 1.468 0.0004 1.4684 If this is a bit confusing, you could add a zero to 1.468 and it would be 1.4680. When doing subtraction, you would do the same. An example is: 4 - 0.086 4 can be written 4.0 or 4.000, so line then up like this: 4.000 -0.086 3.914
No, it is not necessary. But it does help to be tidy.
line up the demials
39.63 +42.35 ------------ 81.98 Just line up the decimals and then add.
in a multiplication problem, you don't have to. in addition & subtraction, you do
you only line the decimals up when you are subtracting or adding not when you are multiplying im not sure about division...
So your value isn't wrong
It is difficult to answer the question because, for addition or subtraction, it is often easier to obtain the exact answer! If you line up the decimal points and then follow the rules of addition or subtraction - exactly as they would apply to whole numbers - you will get the correct answer!Estimation may be useful to check your answer if you are poor at addition or subtraction of integers. But, if that is the case, your estimate is equally likely to be wrong!
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.
You line up the decimals and simply subtract. Below is an example. 2.989-1.989= 2.989 1.989 --------- 1.000
you can line up the decimals
Annexing zeros is included in ordering decimals to even the numbers out so you can line the decimals up. I'm pretty sure that is the right answer...
Well, technically, addition and subtraction are opposites. if you add two numbers together, then you take one and put the other with it. if you subtract two numbers, you take one away from the other. if you are adding or subtracting decimals, then make sure that the decimals are lined up. Fractions have some different rules.
That is because if you don't, you will get the wrong answer. It is ALWAYS important to LINE up the decimals.
Regrouping in math with decimals simply refers to the term used addition or subtraction when either carrying or borrowing is involved.
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.
The importance of lining up the decimals is so you can just add from bottom to top it makes things a lot easier.
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