+ add, - subtract, * multiply, / divide, ( ) parentheses, ^ power (e.g., 2^3 = 8).% converts that number to a fraction of 100. Example: 30% โ 0.3; 150-30% โ 150 - 0.3.**; ^ is automatically converted to ** before evaluation.(200*(10%)) is valid โ 200*0.1.Choose which optional categories you allow. Necessary cookies are always on. Privacy Policy.