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计算:(1)(−81)÷214×(49)÷6(2)−1+5÷(14)×(−4)(3)(−27911)÷9(4)(112+116−1112)÷(112)(5)(−5)÷(−127)×45×(−214)÷7(6)1÷(116−834×27)+718÷1427.

题目详情
计算:
(1)(−81)÷2
1
4
×(
4
9
)÷6
(2)−1+5÷(
1
4
)×(−4)
(3)(−27
9
11
)÷9
(4)(1
1
2
+1
1
6
−1
1
12
)÷(
1
12
)
(5)(−5)÷(−1
2
7
4
5
×(−2
1
4
)÷7
(6)1÷(1
1
6
−8
3
4
×
2
7
)+
7
18
÷
14
27
▼优质解答
答案和解析
(1)原式=-(81×
4
9
×
4
9
×
1
6
)=-
8
3


(2)原式=-1+5×4×(-4)=-1-80=-81;

(3)原式=-(27×
1
9
+
9
11
×
1
9
)=-3
1
11


(4)原式=
3
2
×12+
7
6
×12-
13
12
×12=18+14-13=19;

(5)原式=-(5×
7
9
×
4
5
×
9
4
×
1
7
)=-1;

(6)原式=1÷(
7
6
-
35
4
×
2
7
)+
7
18
×
27
14
=1÷(
7
6
-
5
2
)+
1
4
=-
3
4
+
1
4
=-
1
2