add decimal to fraction conversion and vice versa

Then you want to know how do add fractions to fractions or decimals to decimals?

Start here.

http://www.mathsisfun.com/adding-decimals.html

http://www.mathsisfun.com/converting-decimals-fractions.html

http://www.mathsisfun.com/fractions_addition.html

These will be usful units for you to work through.   

Hi GoldenLeaf,

You mean on the web2 calculator?

I'm not sure what was meant.  Anonymous can come back and clarify the question if he/she wants to.