Decimal operations
Adding decimals
To add decimals first you need to align your decimals one under ther, when the decimals are already ligned up then add zeros so the numbers have the same lenght, then add using , and you only bring the decimal point down.
Subtracting decimals
Subtracting decimals have the same steps as adding them. First align the decimals, then you add zeros if you have to for having the same length of numbers, then subtract them and bring down the decimal point.
Multiplying decimals
For multiplying decimals you need to multiply normally as if the decimals were not there, and then count the decimals places of the numbers you are multiplying and them you put the same decimal places in the answer.