计算.(能简算的要简算)2.5*12.5*32 8/9*[3/4-(7/16-1/4)] 3/8*(3/5/3/4-2/3)
问题描述:
计算.(能简算的要简算)2.5*12.5*32 8/9*[3/4-(7/16-1/4)] 3/8*(3/5/3/4-2/3)
答
2.5*12.5*32=2.5*4*12.5*8=10*100=1000 8/9*[3/4-(7/16-1/4)] =8/9*[3/4+1/4-7/16]=8/9*9/16=1/23/8*(3/5/3/4-2/3)=3/8*(3/5÷3/4-2/3)=3/8*[4/5-2/3]=3/8*2/15=1/20