三道算术题,我真的超级急!十分钟之内回答!(1).(-12-1又1/2+1又1/8)×(-3/4)(2).[-2又1/4-(-1/2)³]÷(-3/8)+(-3/5)×(-一又2/3)²(3).(+二又3/4)+(-一又5/8)+(-5/6)+3/8+(-四又2/3)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 01:43:27
![三道算术题,我真的超级急!十分钟之内回答!(1).(-12-1又1/2+1又1/8)×(-3/4)(2).[-2又1/4-(-1/2)³]÷(-3/8)+(-3/5)×(-一又2/3)²(3).(+二又3/4)+(-一又5/8)+(-5/6)+3/8+(-四又2/3)](/uploads/image/z/2526915-3-5.jpg?t=%E4%B8%89%E9%81%93%E7%AE%97%E6%9C%AF%E9%A2%98%2C%E6%88%91%E7%9C%9F%E7%9A%84%E8%B6%85%E7%BA%A7%E6%80%A5%21%E5%8D%81%E5%88%86%E9%92%9F%E4%B9%8B%E5%86%85%E5%9B%9E%E7%AD%94%21%EF%BC%881%EF%BC%89.%28-12-1%E5%8F%881%2F2%2B1%E5%8F%881%2F8%29%C3%97%28-3%2F4%29%EF%BC%882%EF%BC%89.%5B-2%E5%8F%881%2F4-%EF%BC%88-1%2F2%EF%BC%89%26%23179%3B%5D%C3%B7%EF%BC%88-3%2F8%EF%BC%89%2B%EF%BC%88-3%2F5%EF%BC%89%C3%97%EF%BC%88-%E4%B8%80%E5%8F%882%2F3%EF%BC%89%26%23178%3B%EF%BC%883%EF%BC%89.%EF%BC%88%2B%E4%BA%8C%E5%8F%883%2F4%EF%BC%89%2B%EF%BC%88-%E4%B8%80%E5%8F%885%2F8%EF%BC%89%2B%EF%BC%88-5%2F6%EF%BC%89%2B3%2F8%2B%EF%BC%88-%E5%9B%9B%E5%8F%882%2F3%EF%BC%89)
三道算术题,我真的超级急!十分钟之内回答!(1).(-12-1又1/2+1又1/8)×(-3/4)(2).[-2又1/4-(-1/2)³]÷(-3/8)+(-3/5)×(-一又2/3)²(3).(+二又3/4)+(-一又5/8)+(-5/6)+3/8+(-四又2/3)
三道算术题,我真的超级急!十分钟之内回答!
(1).(-12-1又1/2+1又1/8)×(-3/4)
(2).[-2又1/4-(-1/2)³]÷(-3/8)+(-3/5)×(-一又2/3)²
(3).(+二又3/4)+(-一又5/8)+(-5/6)+3/8+(-四又2/3)
三道算术题,我真的超级急!十分钟之内回答!(1).(-12-1又1/2+1又1/8)×(-3/4)(2).[-2又1/4-(-1/2)³]÷(-3/8)+(-3/5)×(-一又2/3)²(3).(+二又3/4)+(-一又5/8)+(-5/6)+3/8+(-四又2/3)
(1).(-12-1又1/2+1又1/8)×(-3/4)
=12x3/4+3/2x3/4-9/8x3/4
=9+9/8-27/32
=9又9/32
(2).[-2又1/4-(-1/2)³]÷(-3/8)+(-3/5)×(-一又2/3)²
=[-2又1/4+1/8]÷(-3/8)+(-3/5)×(-5/3)²
=-17/8÷(-3/8)+(-3/5)×25/9
=17/3-5/3
=4
(3).(+二又3/4)+(-一又5/8)+(-5/6)+3/8+(-四又2/3)
=(+二又3/4)+(-一又5/8+3/8)+(5/6-四又2/3)
=(+二又3/4)+(-一又1/4)-3又5/6)
=1又1/2-3又5/6
=-2又1/3