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计算:(11)(−57)×(−43)÷(−217)(12)-12+135−4.5+325−513(13)(−13)−(+23)−|−34|−(−14)(14)-513+21112−1614−356(15)-0.125×1820012002×8.

题目详情
计算:
(11)(−
5
7
)×(−
4
3
)÷(−2
1
7
)
(12)-
1
2
+1
3
5
−4.5+3
2
5
−5
1
3

(13)(−
1
3
)−(+
2
3
)−|−
3
4
|−(−
1
4
)
(14)-5
1
3
+2
11
12
−16
1
4
−3
5
6

(15)-0.125×18
2001
2002
×8.
▼优质解答
答案和解析
(11)原式=-
5
7
×
4
3
×
7
15

=
4
9

(12)原式=-
1
2
-4.5+1
3
5
+3
2
5
-5
1
3

=-5+5-5
1
3

=-5
1
3

(13)原式=-
1
3
-
2
3
-
3
4
+
1
4

=-1-
1
2

=-1
1
2

(14)原式=-25
5
12
+2
11
12

=-22
1
2

(15)原式=-0.125×8×18
2001
2002

=-18
2001
2002