Question

What is three tenths plus three fifths

Answer 1

The answer to your problem is 9/10 nine tenth

Answer 2

   3            3                        6               3
 -----  +    -----                   ------   +   -----
   5           10                      10          10                                       
1) write your problem         2) make a common denominator    3) add numerators


the answer should be     9
                                     -----
                                      10