When I type 10 in a cell I keep getting 0.1 instead. Any thoughts

[Enthusiastic new user]

Data in cell. When I type the number 10 in a cell 0.1 comes up instead.
After totalling Nos. 10, 20, 25, 30 & 15 total comes as 0.100 instead of 100;
my formual is =sum(E5:E9). I am using EXcel 2003. I go into general and
click on text so I could keep the numbers as stated. I still get it wrong

 

[JE McGimpsey]

Tools/Options/Edit, uncheck the Fixed Decimal places checkbox.

 

[Enthusiastic new user]

Thank you very much for your expertise. Well done, it has worked. Much
appreciated