9.38+1.271+4.729=15.38
36.7-2.33-2.67=31.7
625*0.5*16=5000
249+99+1=349
876-125-75=676
64.7/4/25=0.647
6.8*7.7+6.8*2.3=68
77*8*0.125=77
填上适当的数,使计算简便,再算出结果．
9.38+1.271+4.729=15.38
36.7-2.33-2.67=31.7
625*0.5*16=5000
249+99+1=349
876-125-75=676
64.7/4/25=0.647
6.8*7.7+6.8*2.3=68
77*8*0.125=77