(pos:名詞)yue:#數學 入面最基本嘅四種運算,分別係#加法、#減法、#乘法 同#除法;算式中有括號嘅部份要運算先,當中以內層者為先;再按照「先乘除,後加減」嘅原則,即係處理完乘數或者除數,先至處理加數或者減數,但係乘除或者加減嘅次序就唔影響答案eng:the four basic arithmetic operations - addition, subtraction, multiplication and division