7.24乘0.1+0.5乘72.4+0.049乘724

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/09 06:00:36

7.24乘0.1+0.5乘72.4+0.049乘724
7.24乘0.1+0.5乘72.4+0.049乘724

7.24乘0.1+0.5乘72.4+0.049乘724
7.24*0.1+0.5*72.4+0.049*724
=7.24*0.1+5*7.24+4.9*7.24
=7.24*(0.1+5+4.9)
=7.24*10
=72.4

7.24*(0.1+5+4.9)=7.24*10=72.4

72.4

=7.24*((0.1+5+4.9)=72.4

把0.5*72.4换成5*7.24,把0.049*724换成4.9*7.24.具体式子如下:
7.24*0.1+0.5*72.4+0.049*724
=7.24*0.1+5*7.24+4.9*7.24
=7.24*(0.1+5+4.9)
=7.24*10
=72.4

7.24乘0.1+0.5乘72.4+0.049乘724
=7.24*0.1+7.24*10*0.5+7.24*100*0.049
=7.24*0.1+7.24*5+7.24*4.9
=7.24*(0.1+5+4.9)
=7.24*10
=72.4