计算下列各题:(1)(+12)+(-23)-(-33)(2)?13?(1?0.5)×13×[2?(?3)2](3)(23?14?38+524)×48

2025-02-25 18:07:51
推荐回答(1个)
回答1:

(1)原式=(-11)+(+33)=22;

(2)原式=-1-0.5×
1
3
×(2?9)

=-1-
1
2
×
1
3
×(?7)

=-1+
7
6

=
1
6


(3)原式=
2
3
×48?
1
4
×48?
3
8
×48+
5
24
×48

=32-12-18+10,
=12.