用简便方法计算0.87*65.5+37.5*0.87-3*0.87
问题描述:
用简便方法计算0.87*65.5+37.5*0.87-3*0.87
答
0.87*65.5+37.5*0.87-3*0.87
=0.87*(65.5+37.5-3)
=0.87*100
=87..