计算:(1)0-(-6)+2-(-13)-(+8)(2)(-5.3)+(-3.2)-(-2.5)-|-5.7|(3)-14+56+23?12(4)(?

2025-05-01 09:45:10
推荐回答(1个)
回答1:

(1)原式=0+6+2+13-8=8-8+13=13;
(2)原式=-5.3-3.2+2.5-5.7=-8.5-5.7+2.5=-6-5.7=-11.7;
(3)原式=-

3
12
+
10
12
+
8
12
-
6
12
?3+10+8?6
12
=
9
12
=
3
4

(4)原式=-1
1
2
-2
1
2
+1
1
4
-1
1
4
+3
1
4
=-4+0+3
1
4
=-
3
4