16.2x[(3.3十4.7)÷0.2]=16.2x(8÷0.2)=16.2x40=648,你好,本题已解答,如果满意 请点右下角“采纳答案”。
16.2x[(3.3十4.7)÷0.2]=16.2x(8÷0.2)=16.2×40=16×40+0.2×40=640+8=648
16.2×〔(3.3+4.7)÷0.2〕=16.2×〔8÷0.2〕=16.2×40=648
=16.2×(8÷0.2)=16.2×40=648