26.7+3.3×1.2+0.04 怎样简便计算~
问题描述：
26.7+3.3×1.2+0.04 怎样简便计算~
回答的再加~
答
26.7+3.3×1.2+0.04
=667.5x0.04+99x0.04+0.04
=0.04x(667.5+99+1)
=0.04x767.5
=30.7