0.45乘0.6加4乘0.045等于多少简便方法?

2025-12-16 08:20:06
推荐回答(1个)
回答1:

0.45×0.6+4×0.045
=0.45×0.6+0.4×0.45
=0.45×(0.6+0.4)
=0.45×1
=0.45