1.1x1.1x1.1-1.1x1.1-0.11小学五年级的题 用简便算法

1.1x1.1x1.1-1.1x1.1-0.11
小学五年级的题 用简便算法

1.1x1.1x1.1-1.1x1.1-0.11
=1.1x1.1x1.1-1.1x1.1x1-0.11x1
=1.1x1.1x(1.1-1)-0.11x1
=1.1x1.1x0.1-0.11x1
=1.1x0.11-0.11x1
=(1.1-1)x0.11
=0.1x0.11
=0.011

原式=1.1x1.1（1.1-1）-1.1x0.1=1.1x0.1x（1.1-1）=0.011

1.1*1.1*(1.1-1)-0.11