Basic arithmetic operations with AddUp are performed by entering numbers and operators to form the expression to evaluate. The expression can be typed in and edited at will, then pressing the Enter key causes it to be evaluated. There is no need to use buttons with this calculator, everything that needs to be evaluated can be directly entered in the work area.
The basic arithmetic operators are:
Other frequently-used operators are:
Parentheses can also be used to nest sub-expressions. For example:
1 + (2 * 3) = 1 + 6 = 7
(1 + 2) * 3 = 3 * 3 = 9