4.6*0.25=(4+0.4+0.2)*0.25=4*0.25+0.4*0.25+0.2*0.25=1+0.1+0.05=1.15
用乘法分配律简算原式=4*60-4*25=240-100=140
25先乘以4,然后在乘以60,因为25乘以4等于100,所以在乘以60就很好算了.
44x60x25=(40x60+4x60)x25=2640x20+2640x5=52800+13200=66000
原式=(4x25)x(60x8)=100x480=48000 供参考.
8*(60-25)=8*60-8*25=480-200=280
(60-4)*25=60*25-4*25=1500-100=1400
简便计算过程方法如下解:4x63x25=4x25x63=100x63=6300
=3x9x4x25 =27x100 =2700
4X(30X25)=(4x25)x30=100x30=3000 希望能帮到你!