(-17)×(-5/4)+(-0.125)×100-1 1/4×(-5)简便运算_数学解答

(-17)×(-5/4)+(-0.125)×100-1 1/4×(-5)简便运算

人气：481 ℃　时间：2020-04-04 14:46:51

解答

(-17)×(-5/4)+(-0.125)×100-1 1/4×(-5)
=17*5/4-12.5+55/4
=(85+55)/4-12.5
=140/4-12.5
=35-12.5
=22.5