Adding with Decimals
When you add with the decimals you add them as usual but you need to allign the decimal point.
2.60 + 7.28= 9.88
Subtracting with Decimals
when you subtract a decimal you need to allign the decimal with the other decimal so when you add you can get right the place of the decimal point.
When you multiply an operation with decimales you just add the spaces of the decimal point so you need to count the # of spaces in the answer so you add the decimal point.
When you divide a whole number with a decimal is the easy operation. First you need to take the decimal point up of its place. Then you can divide.