12.35-7.88+4.59的简便方法是什么朋友们,都请用简便方法:(1):12.35-7.88+4.59= (2):23.4-(9.42-6.55)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/25 17:24:39
![12.35-7.88+4.59的简便方法是什么朋友们,都请用简便方法:(1):12.35-7.88+4.59= (2):23.4-(9.42-6.55)](/uploads/image/z/675135-63-5.jpg?t=12.35-7.88%2B4.59%E7%9A%84%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E6%98%AF%E4%BB%80%E4%B9%88%E6%9C%8B%E5%8F%8B%E4%BB%AC%2C%E9%83%BD%E8%AF%B7%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%EF%BC%9A%281%29%EF%BC%9A12.35-7.88%2B4.59%3D+%282%29%EF%BC%9A23.4-%289.42-6.55%29)
12.35-7.88+4.59的简便方法是什么朋友们,都请用简便方法:(1):12.35-7.88+4.59= (2):23.4-(9.42-6.55)
12.35-7.88+4.59的简便方法是什么
朋友们,都请用简便方法:(1):12.35-7.88+4.59=
(2):23.4-(9.42-6.55)
12.35-7.88+4.59的简便方法是什么朋友们,都请用简便方法:(1):12.35-7.88+4.59= (2):23.4-(9.42-6.55)
(1):12.35-7.88+4.59
=12.4-0.05-8+0.12+4.6-0.01
=12.4+4.6-8+(-0.05+0.12-0.01)
=9+0.06
=9.06
(2):23.4-(9.42-6.55)
=23.4-9.42+6.55
=23.4-9.4-0.02+6.55
=14+6.53
=20.53