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计算:(1)3+50+22×(-15)-1;(2)[1-(1-0.5×12)]×[2-(-3)2];(3)-52+285÷(-2)×(-514);(4)4×(-3)2-5×(-3)+6;(5)(-81)÷214+49÷(-16);(6)12-[34-(14-5-12)];(7)-34÷94+49÷(-

题目详情
计算:
(1)3+50+22×(-
1
5
)-1;
(2)[1-(1-0.5×
1
2
)]×[2-(-3)2];
(3)-
5
2
+
28
5
÷(-2)×(-
5
14
);
(4)4×(-3)2-5×(-3)+6;
(5)(-81)÷2
1
4
+
4
9
÷(-16);
(6)
1
2
-[
3
4
-(
1
4
-5-
1
2
)];
(7)-34÷
9
4
+
4
9
÷(-24);
(8)(
1
8
-
1
25
)×24-(-3-3)2÷(-6÷3)2

2
1
5
)-1;
(2)[1-(1-0.5×
1
2
)]×[2-(-3)2];
(3)-
5
2
+
28
5
÷(-2)×(-
5
14
);
(4)4×(-3)2-5×(-3)+6;
(5)(-81)÷2
1
4
+
4
9
÷(-16);
(6)
1
2
-[
3
4
-(
1
4
-5-
1
2
)];
(7)-34÷
9
4
+
4
9
÷(-24);
(8)(
1
8
-
1
25
)×24-(-3-3)2÷(-6÷3)2
1
5
1155
1
2
)]×[2-(-3)2];
(3)-
5
2
+
28
5
÷(-2)×(-
5
14
);
(4)4×(-3)2-5×(-3)+6;
(5)(-81)÷2
1
4
+
4
9
÷(-16);
(6)
1
2
-[
3
4
-(
1
4
-5-
1
2
)];
(7)-34÷
9
4
+
4
9
÷(-24);
(8)(
1
8
-
1
25
)×24-(-3-3)2÷(-6÷3)2
1
2
11222
5
2
+
28
5
÷(-2)×(-
5
14
);
(4)4×(-3)2-5×(-3)+6;
(5)(-81)÷2
1
4
+
4
9
÷(-16);
(6)
1
2
-[
3
4
-(
1
4
-5-
1
2
)];
(7)-34÷
9
4
+
4
9
÷(-24);
(8)(
1
8
-
1
25
)×24-(-3-3)2÷(-6÷3)2
5
2
5522
28
5
÷(-2)×(-
5
14
);
(4)4×(-3)2-5×(-3)+6;
(5)(-81)÷2
1
4
+
4
9
÷(-16);
(6)
1
2
-[
3
4
-(
1
4
-5-
1
2
)];
(7)-34÷
9
4
+
4
9
÷(-24);
(8)(
1
8
-
1
25
)×24-(-3-3)2÷(-6÷3)2
28
5
282855
5
14
);
(4)4×(-3)2-5×(-3)+6;
(5)(-81)÷2
1
4
+
4
9
÷(-16);
(6)
1
2
-[
3
4
-(
1
4
-5-
1
2
)];
(7)-34÷
9
4
+
4
9
÷(-24);
(8)(
1
8
-
1
25
)×24-(-3-3)2÷(-6÷3)2
5
14
551414
2
1
4
+
4
9
÷(-16);
(6)
1
2
-[
3
4
-(
1
4
-5-
1
2
)];
(7)-34÷
9
4
+
4
9
÷(-24);
(8)(
1
8
-
1
25
)×24-(-3-3)2÷(-6÷3)2
1
4
1144
4
9
÷(-16);
(6)
1
2
-[
3
4
-(
1
4
-5-
1
2
)];
(7)-34÷
9
4
+
4
9
÷(-24);
(8)(
1
8
-
1
25
)×24-(-3-3)2÷(-6÷3)2
4
9
4499
1
2
-[
3
4
-(
1
4
-5-
1
2
)];
(7)-34÷
9
4
+
4
9
÷(-24);
(8)(
1
8
-
1
25
)×24-(-3-3)2÷(-6÷3)2
1
2
1122
3
4
-(
1
4
-5-
1
2
)];
(7)-34÷
9
4
+
4
9
÷(-24);
(8)(
1
8
-
1
25
)×24-(-3-3)2÷(-6÷3)2
3
4
3344
1
4
-5-
1
2
)];
(7)-34÷
9
4
+
4
9
÷(-24);
(8)(
1
8
-
1
25
)×24-(-3-3)2÷(-6÷3)2
1
4
1144
1
2
)];
(7)-34÷
9
4
+
4
9
÷(-24);
(8)(
1
8
-
1
25
)×24-(-3-3)2÷(-6÷3)2
1
2
1122
4
9
4
+
4
9
÷(-24);
(8)(
1
8
-
1
25
)×24-(-3-3)2÷(-6÷3)2
9
4
9944
4
9
÷(-24);
(8)(
1
8
-
1
25
)×24-(-3-3)2÷(-6÷3)2
4
9
44994
1
8
-
1
25
)×24-(-3-3)2÷(-6÷3)2
1
8
1188
1
25
)×24-(-3-3)2÷(-6÷3)2
1
25
11252522
▼优质解答
答案和解析
(1)原式=3+50-45-1=5115;(2)原式=(1-1+14)×(2-9)=-74;(3)原式=-52+285×12×514=-52+1=-32;(4)原式=4×9+15+6=36+21=57;(5)原式=-81×49-49×116=-36136;(6)原式=12-34+14-5-12=-512;(7)原...