来自苏浩秦的问题
2.005×390-20.05×41+200.5×0.2.
2.005×390-20.05×41+200.5×0.2.
1回答
2020-11-26 12:45
2.005×390-20.05×41+200.5×0.2.
2.005×390-20.05×41+200.5×0.2.
2.005×390-20.05×41+200.5×0.2,
=20.05×39-20.05×41+20.05×2,
=20.05×(39+2-41),
=0.