23*2*4+25*4*2+27*1*8+25*8*1的简便计算法
问题描述:
23*2*4+25*4*2+27*1*8+25*8*1的简便计算法
答
23*2*4+25*4*2+27*1*8+25*8*1
=23*8+25*8+27*8+25*8
=8*(23+25+27+25)
=8*100
=800
答
(2*4)*(23+27+25+25)
答
=23*8+25*8+27*8+25*8
=(23+25+27+25)*8
=100*8
=800
答
8*(23+25+27+25)=800
答
23*2*4+25*4*2+27*1*8+25*8*1
=23*8+25*8+27*8+25*8
=(23+25+27+25)*8
=100*8
=800
答
2*4*(23+25+27+25)=8*100=800