如何用简便方法计算17.96-(8.24+3.89)+1.07_数学解答

如何用简便方法计算17.96-(8.24+3.89)+1.07

人气：275 ℃　时间：2019-08-28 08:41:30

解答

17.96-(8.24+3.89)+1.07
=17.96+1.04-(8.24+1.76+2.03)+0.03
=19-(10+2.03)+0.03
=19-10+0.03-2.03
=9-2
=7