A prefix operator is an operator that is applied to the variable, constant, function, or parenthetic expression that immediately follows it. The plus sign (+) and minus sign (-) can be used as prefix ...

From classrooms to kitchen tables, debates about math education are never far away. Should teachers drill multiplication ...

3. Principal of the present arithmetic operation system The principal of the present arithmetic operation system resides in that ¡°digit number is changed simply by changing a digit-number parameter ...