Question

0.02乘38.9乘50怎么简便计算？

Answer 1

简便计算如下:
0.02×38.9×50
=0.02×50×38.9
=1×38.9
=38.9

Answer 2

我认为0.02应该先乘以50，然后再乘以38.9，这样算方便。

Answer 3

0.02×38.9×50
=0.02×50×38.9
=1×38.9
=38.9

Answer 4

=0.02×50×38.9
＝1×38.9
＝38.9