Emails for nightly discussion

I have been getting some very creative and thoughtful emails as part of the homework assignments, i wanted to share a few that are different, but each unique and well done!
A. 31+45+39=

lllx+llllxxxxx+lllxxxxxxxxxx

lllllllllllxxxxx=115
(I like this 1 because it shows the problem. But what I can't show is how he shaded 10 ones and thats how he got the final picture and answer.

B. The answer is 115. I know because I started with the highest number and added on. And I got 115. (What I like about this, is the complete answer written iut explaining his steps)

C. I used expanded form like (40+5)+(30+1)+(30 +9) I will group the 10s and 1s together.
40+30+30=100 and 5+1+9=15 and my answer is 115.
The answer is 115.
D. I used carrots for hundred,peanuts for tens,and raisins for ones. Then I counted and got the answer that is 115. (What a clever way to make represents on the pattern.)