题目内容

计算:
(1)2+(-4)-(-2)+4
(2)2÷(1-
1
3
)×(-
2
3

(3)5-(-2)2×2
(4)(
3
4
-
1
6
-
1
12
)×(-48)
(1)2+(-4)-(-2)+4=2-4+2+4=4;
(2)2÷(1-
1
3
)×(-
2
3
)=2÷
2
3
×(-
2
3
)=2×
3
2
×(-
2
3
)=-2;
(3)5-(-2)2×2=5-4×2=5-8=-3;
(4)(
3
4
-
1
6
-
1
12
)×(-48)=
3
4
×(-48)-
1
6
×(-48)-
1
12
×(-48)=-36+8+4=-24;
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