简便运算:5-[4.6-2.4*(4.75-3.25)]
来源:学生学帮网 编辑:学帮网 时间:2024/06/05 05:07:02
简便运算:5-[4.6-2.4*(4.75-3.25)]
5-[4.6-2.4*(4.75-3.25)]
=5-4.6+2.4*(4.75-3.25)]
=0.4+2.4*1.5
=0.4+0.4*6*1.5
=0.4*(1+6*1.5)
=0.4*(1+9)
=4
简便运算:5-[4.6-2.4*(4.75-3.25)]
5-[4.6-2.4*(4.75-3.25)]
=5-4.6+2.4*(4.75-3.25)]
=0.4+2.4*1.5
=0.4+0.4*6*1.5
=0.4*(1+6*1.5)
=0.4*(1+9)
=4