First, choose your sum. For example, if you would like to do 5 add 10 you would choose + Then, type in your first number. If you were doing the sum above it would be 5. Then your second number. Again, for the example it would be 10. Then hopefully, it will show the right answer. If it was the example it would be 15.
I tested this on my grandad, and it worked!!!!!!!!! A calculator project Updated! Added Multiply and Divide!
