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Q: Why do you add a decimal point in math with numbers?

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no, they add to 10.10 To add decimal numbers you add like any other problem and bring down the decimal point

If there are any numbers which are integers and so do not have a decimal point, then append one at the extreme right. Then arrange all the numbers in a column, with their decimal points aligned. Ad up the numbers ignoring the decimal points entirely. In the answer insert a decimal point under the column of decimal points.

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.

Example of multiplying whole decimal numbers: 2.37 × 3.56 = 8.4372 Remove the decimal point and multiply as for whole numbers: 237 × 356 = 84372 Then add the decimal point, thus : 8.4372

To change a decimal into a percent, move the decimal point two places to the right and add the percent sign to the right of the numbers.

Put the numbers in a column with the decimal points aligned. Add the numbers ignoring the decimal points. Insert the decimal point in the answer exactly below the column of decimal points in the numbers being added (summands).

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

there like lit dots in math you can add with them anthing

First write both numbers, one below the other so that the decimal points line up. If you like, add 0s to the right hand side so that both numbers are the same length after the decimal point. Add, as you would any numbers. In the answer, put the decimal point below the ones above.So:_9.230+0.071=====_9.301The underscores (_) in the front are simply to line up the numbers.

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

The decimal in the number 3.14 is after the 3. Put the deciman point in the right place when you add those numbers.

Ignore the decimal point, multiply, count the places to the right of the decimal point, then count the same number from left to right in the answer,( after you add if nessicary) And put the decimal there. There's your answer. Example: 5 x 0.2 = 1.0 unusually, the number gets smaller after you add the decimal point.

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