7.3*9.8+73*0.98怎么简便计算?

2024-11-02 16:37:22
推荐回答(4个)
回答(1):

7.3×9.8+73×0.98
=7.3×9.8+7.3×9.8
=(7.3+7.3)×9.8
=14.6×9.8
=14.6×(10-0.2)
=14.6×10-14.6×0.2
=146-2.92
=143.08

回答(2):

7.3×9.8+73×0.98
=7.3×9.8+7.3×9.8
=7.3×19.6
=143.08
所以这里可以通过简便计算得到答案是143.08。

回答(3):

通过观察可得
原式=7.3(9.8+9.8)=7.3*19.6=7.3(20-0.4)=146-2.92=143.08
答案是143.08

回答(4):

答:7.3*9.8+73*0.98
=7.3*9.8+7.3*9.8
=7.3*(10-0.2)+7.3*9.8
=7.3*10-7.3*0.2+7.3*9.8
=73-1.46+73*9.8
=71.54+73*9.8
=71.54+71.54
=143.08