用简便方法计算下面各题:4.8*0.25 0.5*2.33*8 1.5*150 0.3*2.5*0.4
问题描述:
用简便方法计算下面各题:4.8*0.25 0.5*2.33*8 1.5*150 0.3*2.5*0.4
答
4.8*0.25=1.2*(4*0.25)=1.2*1=1.2
0.5*2.33*8= 0.5*8*2.33=4*2.33=9.32
1.5*150 =15*15=225
0.3*2.5*0.4=0.3*(2.5*0.4)=0.3*1=0.3