用简便方法计算:1.1x1.1x1.1-1.1x1.1-0.1
问题描述:
用简便方法计算:1.1x1.1x1.1-1.1x1.1-0.1
答
1.1x1.1x1.1-1.1x1.1-0.1
=1.1×1.1×(1.1-1)
=1.1×1.1×0.1-0.1
=0.121-0.1
=0.021