Question 3726
Here ya go...

The hint to decimals... keep them lined up and keep it neat!!! 

*** NOTE NOTE NOTE.. I WILL USE THE 0 only as a SPACE FILLER so you can see the neat STRAIGHT LINES that will develop!! ***

EX:
000.50
002.62
031.48
145.50 +
 
** Just add em and keep them straight.... OH AND, AND, AND, dont forget to carry over if needed..

THE ANSWER IS 180.1

Lets try another....

   000.0012
   030.1340
   001.9000
   642.3001

** See the nice line?? **  

THE ANSWER IS 674.3353

LAST ONE in a little bit different layout.... 

Add the following numbers:  1.9 + 21.89 + 321.789 + 4321.6789 + 5.5

ok.... lets set this in a workable line...

  0001.9
  0021.89
  0321.789
  4321.6789
  0005.5

and the answer is..... 11461.079

AGAIN.... KEEP THEM STRAIGHT AND KEEP IT NEAT!!!! 

Good Luck ;-)

Carl