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(1)-1513-317-423+817(2)(-5)×367+(-7)×(-367)+12×(-367)(3)|-512|×(−56)×311÷114(4)[50-(79-1112+16)×(-6)2]÷(-7)2]÷(-7)2(5)(-991415)×30(6)1(−0.1)3-[-3×(-23)2-113÷(-2

题目详情
(1)-15
1
3
-3
1
7
-4
2
3
+8
1
7
      
(2)(-5)×3
6
7
+(-7)×(-3
6
7
)+12×(-3
6
7

(3)|-5
1
2
(−
5
6
3
11
÷1
1
4

(4)[50-(
7
9
-
11
12
+
1
6
)×(-6)2]÷(-7)2]÷(-7)2
(5)(-99
14
15
)×30
(6)
1
(−0.1)3
-[-3×(-
2
3
2-1
1
3
÷(-2)2].
▼优质解答
答案和解析
1)原式=-15
1
3
-4
2
3
+8
1
7
-3
1
7
=-20+5=-15;
(2)原式=3
6
7
×(-5+7-12)=-
270
7

(3)原式=
11
2
×(-
5
6
)×
3
11
×
4
5
=-1;
(4)原式=[(50-28+33-6)÷49]÷49=
1
49

(5)原式=(-100+
1
15
)×30=-3000+2=-2998;
(6)原式=-100+
4
3
-
1
3
=-99.