Note:- Here, "[---]" denotes clicking an operator button, for example "[Clr]".

Basic maths:- The standard operators (+,-,* and /) are used in the traditional way - "x [operator] y [=]".

Clear Screen:- Just click "[Clr]".

Remainder:- "x [Mod] y [=]" returns x modulo y, which is the remainder when x is divided by y.

Powers and roots:- To find x ^ y, enter "[Base] x [,] y [)] [=]". Oh, and ignore whatever gets displayed on the screen as you type all this. Of course, y can be a fraction and/or expression, so to find the cube root give y as "[(] 1 [/] 3 [)]".

Square root:- "[Sqrt] x [)]" returns the square root of x.