初一的几道计算题-3又5/8+3又1/12-19/8-25/12(1又4/5-2又5/6+3又7/10-4又8/15)÷(-1/30)[(-1-1/3)²-(1又2/3)÷(1又1/8)]×(-1又1/2)³
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/28 10:12:40
![初一的几道计算题-3又5/8+3又1/12-19/8-25/12(1又4/5-2又5/6+3又7/10-4又8/15)÷(-1/30)[(-1-1/3)²-(1又2/3)÷(1又1/8)]×(-1又1/2)³](/uploads/image/z/7650157-13-7.jpg?t=%E5%88%9D%E4%B8%80%E7%9A%84%E5%87%A0%E9%81%93%E8%AE%A1%E7%AE%97%E9%A2%98-3%E5%8F%885%2F8%2B3%E5%8F%881%2F12-19%2F8-25%2F12%EF%BC%881%E5%8F%884%2F5-2%E5%8F%885%2F6%2B3%E5%8F%887%2F10-4%E5%8F%888%2F15%EF%BC%89%C3%B7%EF%BC%88-1%2F30%EF%BC%89%5B%EF%BC%88-1-1%2F3%EF%BC%89%26%23178%3B-%EF%BC%881%E5%8F%882%2F3%EF%BC%89%C3%B7%EF%BC%881%E5%8F%881%2F8%EF%BC%89%5D%C3%97%EF%BC%88-1%E5%8F%881%2F2%EF%BC%89%26%23179%3B)
初一的几道计算题-3又5/8+3又1/12-19/8-25/12(1又4/5-2又5/6+3又7/10-4又8/15)÷(-1/30)[(-1-1/3)²-(1又2/3)÷(1又1/8)]×(-1又1/2)³
初一的几道计算题
-3又5/8+3又1/12-19/8-25/12
(1又4/5-2又5/6+3又7/10-4又8/15)÷(-1/30)
[(-1-1/3)²-(1又2/3)÷(1又1/8)]×(-1又1/2)³
初一的几道计算题-3又5/8+3又1/12-19/8-25/12(1又4/5-2又5/6+3又7/10-4又8/15)÷(-1/30)[(-1-1/3)²-(1又2/3)÷(1又1/8)]×(-1又1/2)³
-3又5/8+3又1/12-19/8-25/12
=-29/8-19/8+37/12-25/12
=-48/8+12/12
=-6+1
=-5
(1又4/5-2又5/6+3又7/10-4又8/15)/(-1/30)
=(1又4/5-2又5/6+3又7/10-4又8/15)×(-30)
=-1又4/5×30+2又5/6×30-3又7/10×30+4又8/15×30
=-54+85-111+136
=56
[(1-1/3)的2次方-(-1又2/3)÷(-1又1/8)]×(-1又1/2)的3次方
=[(2/3)的2次方-(-5/3)÷(-9/8)]×(-27/8)
=[4/9-40/27]×(-27/8)
=-4/9×27/8+40/27×27/8
=-1.5+5
=3.5
这种题没有捷径,熟能生巧
我都不会了,,,
[(1-1/3)的2次方-(-1又2/3)÷(-1又1/8)]×(-1又1/2)的3次方
=[(2/3)的2次方-(-5/3)÷(-9/8)]×(-27/8)
=[4/9-40/27]×(-27/8)
=-4/9×27/8+40/27×27/8
=-1.5+5
=3.5