48.7-160.6*5.84等于多少(用简便算法怎么解)_数学解答

48.7-160.6*5.84等于多少(用简便算法怎么解)

人气：300 ℃　时间：2020-06-23 20:48:56

解答

48.7-160.6*5.84
=48.7-(160+0.6)*(6-0.16)
=48.7-160*6-0.6*6+160*0.16+0.6*0.16
=48.7-960-3.6+25.6+0.096
=48.7-960+(-3.6+25.6)+0.096
=48.7-960+22+0.096
=70.796-960= -889.204