简便计算:78×36+7.8×741-717+8 2.42+4.58-4.123×18-123×3+85×123?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/03 01:40:11
![简便计算:78×36+7.8×741-717+8 2.42+4.58-4.123×18-123×3+85×123?](/uploads/image/z/26888-32-8.jpg?t=%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%3A78%C3%9736%EF%BC%8B7.8%C3%97741-717%EF%BC%8B8+2.42%2B4.58-4.123%C3%9718-123%C3%973%EF%BC%8B85%C3%97123%3F)
简便计算:78×36+7.8×741-717+8 2.42+4.58-4.123×18-123×3+85×123?
简便计算:78×36+7.8×741-717+8 2.42+4.58-4.123×18-123×3+85×123?
简便计算:78×36+7.8×741-717+8 2.42+4.58-4.123×18-123×3+85×123?
7878.8
2.7
12300
123×18-123×3+85×123
= 123×(18-3+85)
= 123×100
= 12300