几道计算题不会，帮忙啊~

来源：百度知道编辑：UC知道时间：2024/07/07 18:17:45

2.9*0.45+0.29*4.2+0.029*13

3.84*9.6+0.96*61.6

晕!~
第一题 =2.9*0.45+2.9*0.42+2.9*0.13
=2.9*(0.45+0.42+0.13)
=2.9*1
=2.9
第二题 =3.84*9.6+9.6*6.16
=9.6*(3.84+6.16)
=9.6*10
=96

1、 2.9*0.45+2.9*0.42+2.9*0.13
=2.9*(0.45+0.42+0.13)
=2.9*1=2.9
2、 3.84*9.6+9.6*6.16
=9.6*(3.84+6.16)
=9.6*10=96

简单
=2.9*0.45+0.29*10*4.2/10+0.029*100*13/100
=2.9*(0.45+0.42+0.13)
=2.9
第二题方法同 =96