(5.25+0.125+5.75)*8=?
问题描述:
(5.25+0.125+5.75)*8=?
答
(5.25+0.125+5.75)*8
=[(5.25+5.75)+0.125]*8
=(11+0.125)*8
=11*8+0.125*8
=88+1
=89