问题 解答题
计算:
(1)0-(+8)+(-2.7)-(+5);
(2)-3.92+6.24-8.56+4.28;
(3)0.25+
1
12
+(-
2
3
)-
1
4
-
5
12

(4)-
5
6
-3.74-(-3.74)+
5
6
+17.8
答案

(1)原式=0-8-2.7-5,

=-15.7;

(2)原式=(6.24+4.28)-(3.92+8.56),

=10.52-12.48,

=-1.96;

(3)原式=(

1
4
-
1
4
)+(
1
12
-
5
12
-
2
3
),

=-1;

(4)原式=(-

5
6
+
5
6
)+(-3.74+3.74)+17.8,

=17.8.

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