计算下列各题:(1)(12?18)×(?16)(2)5-(-5)3÷(-5)2(3)(115?56?712)×(?60)(4)?16?(1?12)÷3

2025-02-22 11:10:53
推荐回答(1个)
回答1:

(1)原式=
1
2
×(-16)+
1
8
×16
=-8+2
=-6;

(2)原式=5-(-125)÷25
=5+5
=10;

(3)原式=
1
15
×(-60)-
5
6
×(-60)-
7
12
×(-60)
=-4+50+35
=81;

(4)原式=-1-
1
2
×
1
3
×(2-9)
=-1+
1
6
×7
=
1
6