北师大版 (-64)+17+(-23)+68 (-52)+241+(-74)+2 41+(-23)+(-31)+0(-2
来源:学生作业帮 编辑:百度作业网作业帮 分类:数学作业 时间:2024/08/08 21:18:41
北师大版
(-64)+17+(-23)+68 (-52)+241+(-74)+2 41+(-23)+(-31)+0
(-26)+52+16+(-72)这几道题不明白,
(-64)+17+(-23)+68 (-52)+241+(-74)+2 41+(-23)+(-31)+0
(-26)+52+16+(-72)这几道题不明白,
![北师大版 (-64)+17+(-23)+68 (-52)+241+(-74)+2 41+(-23)+(-31)+0(-2](/uploads/image/z/15145749-45-9.jpg?t=%E5%8C%97%E5%B8%88%E5%A4%A7%E7%89%88+%28-64%29%2B17%2B%28-23%29%2B68+%EF%BC%88-52%EF%BC%89%2B241%2B%EF%BC%88-74%EF%BC%89%2B2+41%2B%EF%BC%88-23%EF%BC%89%2B%EF%BC%88-31%EF%BC%89%2B0%EF%BC%88-2)
(-64)+17+(-23)+68
=-64+17-23+68
=-47-23+68
=-70+68
=-2
(-52)+241+(-74)+2
=-52+241-74+2
=189-74+2
=115+2
=117
41+(-23)+(-31)+0
=41-23-31+0
=18-31+0
=-13
(-26)+52+16+(-72)
=-26+52+16-72
=26+16-72
=42-72
=-30
=-64+17-23+68
=-47-23+68
=-70+68
=-2
(-52)+241+(-74)+2
=-52+241-74+2
=189-74+2
=115+2
=117
41+(-23)+(-31)+0
=41-23-31+0
=18-31+0
=-13
(-26)+52+16+(-72)
=-26+52+16-72
=26+16-72
=42-72
=-30