125*1.2*1.5*1.8*3.2 与12.5*67+53*3.1+72*3.1 怎样简便计算,谢谢!

题目

125*1.2*1.5*1.8*3.2 与12.5*67+53*3.1+72*3.1 怎样简便计算,谢谢!

答案

125*1.2*1.5*1.8*3.2
=125×3.2×1.5×1.2×1.8
=125×0.8×4×1.5×2.16
=100×6×2.16
=6×216
=1296