88.888×111.11用简便计算 救我啊

问题描述:

88.888×111.11用简便计算 救我啊

88.888×111.11=0.8*111.11*111.11=0.8*12345.4321

用计算机

=88.888*(100+10+1+0.1+0.01)
=88.888*100+88.888*10+88.888*1+88.888*0.1+88.888*0.01
=8888.8+888.88+88.888+8.8888+0.88888
=9876.34568