0.25×44=0.25×4×11=1×11=110.25×44=1/4×44=11
方法一:0.25x44=0.25x(4x11)=(0.25x4)x11=1x11=11方法二:0.25x44=0.25x(40+4)=0.25x40+0.25x4=10+1=11