题目内容

计算:
(1)(-12)-5+(-14)-(-39)
(2)2-2÷
1
3
×3
(3)(
5
12
+
2
3
-
3
4
)×(-12)

(4)-14-(1-0.5)×
1
3
×[2-(-3)2]
(1)(-12)-5+(-14)-(-39)
=-12-5-14+39
=8;

(2)2-2÷
1
3
×3
=2-6×3
=2-18
=-16;

(3)(
5
12
+
2
3
-
3
4
)×(-12)

=-5-8+9
=-4;

(4)-14-(1-0.5)×
1
3
×[2-(-3)2]

=-1-
1
2
×
1
3
×[2-9]
=-1-
1
2
×
1
3
×[-7]
=-1+
7
6

=
1
6
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网