小学四年级下册数学快乐园144页(5)145页(2)146页(7)(8)
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/27 01:52:01
小学四年级下册数学快乐园144页(5)145页(2)146页(7)(8)
![](http://img.wesiedu.com/upload/6/8e/68eb0485c5fa570cdd4d5facd37a15c8.jpg)
![](http://img.wesiedu.com/upload/1/03/103e0242075950b5d5e0d9017c563945.jpg)
![](http://img.wesiedu.com/upload/8/76/8764ea3671b71482508b6807d06d2b97.jpg)
![](http://img.wesiedu.com/upload/0/c0/0c0c858855dafdc226b4bd9f9fddb34d.jpg)
![](http://img.wesiedu.com/upload/6/8e/68eb0485c5fa570cdd4d5facd37a15c8.jpg)
![](http://img.wesiedu.com/upload/1/03/103e0242075950b5d5e0d9017c563945.jpg)
![](http://img.wesiedu.com/upload/8/76/8764ea3671b71482508b6807d06d2b97.jpg)
![](http://img.wesiedu.com/upload/0/c0/0c0c858855dafdc226b4bd9f9fddb34d.jpg)
![小学四年级下册数学快乐园144页(5)145页(2)146页(7)(8)](/uploads/image/z/4962698-26-8.jpg?t=%E5%B0%8F%E5%AD%A6%E5%9B%9B%E5%B9%B4%E7%BA%A7%E4%B8%8B%E5%86%8C%E6%95%B0%E5%AD%A6%E5%BF%AB%E4%B9%90%E5%9B%AD144%E9%A1%B5%EF%BC%885%EF%BC%89145%E9%A1%B5%EF%BC%882%EF%BC%89146%E9%A1%B5%EF%BC%887%EF%BC%89%EF%BC%888%EF%BC%89)
12×50÷8
=75 再答: 7×20-3×20-45
=140-60-45
=35
再答: (15×4-5×10)÷5
=(60-50)÷5
=10÷5
=2
再答: (14×64+805)÷30
=(896+805)÷30
=56.7
=75 再答: 7×20-3×20-45
=140-60-45
=35
再答: (15×4-5×10)÷5
=(60-50)÷5
=10÷5
=2
再答: (14×64+805)÷30
=(896+805)÷30
=56.7