问题 解答题
计算:
(1)-3+10-5
(2)-0.5+(-15)-(-17)-|-12|
(3)-3.5÷
7
8
×(-
3
4
)

(4)(
1
2
+
5
6
-
7
12
)×(-36)

(5)-2×(-
1
2
)2+|-2|3-(-
1
2
)

(6)-14+〔1-(1-0.5×2)〕÷|2-(-3)2|
答案

(1)原式=-3-5+10

=2;

(2)原式=-0.5-15+17-12

=-27.5+17

=-10.5;

(3)原式=-

7
2
×
8
7
×(-
3
4

=3;

(4)原式=-(

1
2
×36+
5
6
×36-
7
12
×36)

=-(18+30-21)

=-27;

(5)原式=-2×

1
4
+8+
1
2

=-

1
2
+8+
1
2

=8;

(6)原式=-1+[1-0]÷7

=-1+

1
7

=-

6
7

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