有理数加减法计算.用拖试一两步就行,杂算?①(-2.4)+(+3.5)+(-4.6)+(+3.5)=?②(-1/3)+(+3/4)+(-5/6)+(-1/2)=?两题都要用加法交换,加法结合.
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/25 19:40:49
![有理数加减法计算.用拖试一两步就行,杂算?①(-2.4)+(+3.5)+(-4.6)+(+3.5)=?②(-1/3)+(+3/4)+(-5/6)+(-1/2)=?两题都要用加法交换,加法结合.](/uploads/image/z/13836240-0-0.jpg?t=%E6%9C%89%E7%90%86%E6%95%B0%E5%8A%A0%E5%87%8F%E6%B3%95%E8%AE%A1%E7%AE%97.%E7%94%A8%E6%8B%96%E8%AF%95%E4%B8%80%E4%B8%A4%E6%AD%A5%E5%B0%B1%E8%A1%8C%2C%E6%9D%82%E7%AE%97%3F%E2%91%A0%EF%BC%88-2.4%EF%BC%89%2B%EF%BC%88%2B3.5%EF%BC%89%2B%EF%BC%88-4.6%EF%BC%89%2B%EF%BC%88%2B3.5%EF%BC%89%3D%3F%E2%91%A1%28-1%2F3%29%2B%28%2B3%2F4%29%2B%28-5%2F6%29%2B%28-1%2F2%29%3D%3F%E4%B8%A4%E9%A2%98%E9%83%BD%E8%A6%81%E7%94%A8%E5%8A%A0%E6%B3%95%E4%BA%A4%E6%8D%A2%2C%E5%8A%A0%E6%B3%95%E7%BB%93%E5%90%88.)
有理数加减法计算.用拖试一两步就行,杂算?①(-2.4)+(+3.5)+(-4.6)+(+3.5)=?②(-1/3)+(+3/4)+(-5/6)+(-1/2)=?两题都要用加法交换,加法结合.
有理数加减法计算.用拖试一两步就行,杂算?
①(-2.4)+(+3.5)+(-4.6)+(+3.5)=?
②(-1/3)+(+3/4)+(-5/6)+(-1/2)=?
两题都要用加法交换,加法结合.
有理数加减法计算.用拖试一两步就行,杂算?①(-2.4)+(+3.5)+(-4.6)+(+3.5)=?②(-1/3)+(+3/4)+(-5/6)+(-1/2)=?两题都要用加法交换,加法结合.
第一题正数加正数,负数加负数,正好等于0;第二题前两个相加,后两个相加,等于负十二分之十一