12.5x5.6脱式计算

12.5x5.6脱式计算简便算法
2024-12-02 16:11:57
推荐回答(2个)
回答1:

=12.6×(6一o.4)
=12.5×6一12.5×o.4
=75-1o
=65

回答2:


供参考