explain how you can find the sum 25+59 without using pencil and paper or a calculator. then find the sum

Answer 1

You can do it in your head quite simply. 5+9 is 14, carry the 1, 5+2+1=8. So the sum is 84

Answer 2

I'd rather add 25 and 60, and then subtract 1.

Answer 3

My answer is 84 but what is the sum