简算:25*125*32 3.8-3.8*(3.8-3.8) (5/8-1/4)*(8/9除4/3) 831*36又4/5 +63.2*831
问题描述:
简算:25*125*32 3.8-3.8*(3.8-3.8) (5/8-1/4)*(8/9除4/3) 831*36又4/5 +63.2*831
答
25*125*32=25*4*8*125=100*1000+1000003.8-3.8*(3.8-3.8)=3.8-0=3.8(5/8-1/4)*(8/9除4/3)=3/8*36/27=1/2831*36又4/5 +63.2*831=831*184/5+63.2*831=831*(36.8+63.2)=83100