Question

How to add 3/5 and 1/10 in simplest form

Answer 1

to add these you must have a common denominator. In this case 10 will work because both 5 and 10 can evenly go into 10. Now whatever you multiplied the bottom by to get 10 you must do the same to the top. This is shown below:
3/5+ 1/10 = 6/10+ 1/10
You can now add these together to get 7/10. This is also in the simplest form.

Answer 2

Find a common denominator and then add.
3/5=6/10
6/10+1/10=7/10