简便方法计算如下:3.36×12-0.2×33.6=3.36×12-2×3.36=3.36×(12-2)=3.36×10=33.6
数字合并时挑一样(相似)且复杂者,=33.6*(1.2-0.2)=33.6
=33.6✖️1.2 - 0.2 ✖️ 33.6=33.6✖️(1.2-0.2)=33.6✖️1=33.6