Predict: I predict this sum will be about addition.

Read: 3?

+?8

=65

Clarify: Nothing to clarify.

Mathematicians tool box: Test all possibilities.

Solve: I figured out that 8+7 equals 15. So I put the 5 down and carried the 1. Then I added 1 and 3 which gave me 4. Then I knew that if you added 2 to 4 you would get 6.

Answer: 37

+28

=65