简便计算5.6×37.5+56×6.25=5.6×37.5+5.6×62.5=5.6×（37.5+62.5）=5.6×100=5605.6×37.5+56×6.25=56×3.75+56×6.25=56×（3.75+6.25）=56×10=560
5.6×37.5+56×6.25=5.6x(37.5+62.5)=5.6x100=560
