4÷4/5-4/5÷4 7/18*1/4+3/4÷18/7 简便运算
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 18:21:44
![4÷4/5-4/5÷4 7/18*1/4+3/4÷18/7 简便运算](/uploads/image/z/3582490-58-0.jpg?t=4%C3%B74%2F5-4%2F5%C3%B74+7%2F18%2A1%2F4%2B3%2F4%C3%B718%2F7+%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97)
4÷4/5-4/5÷4 7/18*1/4+3/4÷18/7 简便运算
4÷4/5-4/5÷4 7/18*1/4+3/4÷18/7 简便运算
4÷4/5-4/5÷4 7/18*1/4+3/4÷18/7 简便运算
4÷4/5-4/5÷4
=5-1/5
=4又4/5
7/18*1/4+3/4÷18/7
=7/18x1/4+3/4x7/18
=7/18x(1/4+3/4)
=7/18x1
=7/18
4÷4/5-4/5÷4
=4*5/4-4/5*1/4
=4*5/4-1/5
=5-1/5
=4又4/5
7/18*1/4+3/4÷18/7
=7/18*1/4+3/4*7/18
=7/18*(1/4+3/4)
=7/18
PS:这类题其实就是把算式里面的公因式(相同部分)给提出来在进行预算、