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计算:(1)(+325)+(-278)+(-3512)+(-118)+(+535)+(+5512)(2)(-6.5)×(-2)÷(-13)÷(-5)(3)(-5)×713+7×(-713)-12÷(-322)(4)229×(-112)3-(-1.2)2÷0.42(5)-22-(-3)3×(-1)4-(-1)5(6)[45-(79-1112+56)

题目详情
计算:
(1)(+3
2
5
)+(-2
7
8
)+(-3
5
12
)+(-1
1
8
)+(+5
3
5
)+(+5
5
12

(2)(-6.5)×(-2)÷(-
1
3
)÷(-5)
(3)(-5)×7
1
3
+7×(-7
1
3
)-12÷(-
3
22
)
(4)2
2
9
×(-1
1
2
)3-(-1.2)2÷0.42
(5)-22-(-3)3×(-1)4-(-1)5
(6)[45-(
7
9
-
11
12
+
5
6
)×36]÷5.
▼优质解答
答案和解析
(1)原式=(3
2
5
+5
3
5
)+(-2
7
8
-1
1
8
)+(-3
5
12
+5
5
12
)=9-4+2=7;
(2)原式=-6.5×(-2)×(-3)×(-
1
5
)=
39
5

(3)原式=-5×7
1
3
+7×(-7
1
3
)-12×(-7
1
3
)=7
1
3
×(-5-7+12)=0;
(4)原式=
20
9
×(-
27
8
)-1.44÷0.16=-12-
17
2
=-
33
2

(5)原式=-4+27+1=24;
(6)原式=(45-28+33-30)×
1
5
=20×
1
5
=4.