五年级上册数学简便计算9.6*3.6+7.2*0.2 2.72-3.97+5.38-2.039.6*3.6+7.2*0.2 2.7_数学解答

五年级上册数学简便计算9.6*3.6+7.2*0.2 2.72-3.97+5.38-2.03
9.6*3.6+7.2*0.2 2.72-3.97+5.38-2.03

人气：249 ℃　时间：2020-04-02 19:38:42

解答

9.6*3.6+7.2*0.2=9.6*3.6+3.6*2*0.2=3.6*（9.6+2*0.2）=3.6*10=36
2.72-3.97+5.38-2.03=2.72+5.38-3.97-2.03=（2.72+5.38）-（3.97+2.03）=8-6=2