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计算:(1)2×(−12)3−3×(−12)2−1(2)−679−[32×(−45)+0.2+135÷117](3)1−{1−[1−315(−516}]×3}÷(−1)(4)11×2+12×3+13×4+…+12000×12001.

题目详情
2×(−
1
2
)3−3×(−
1
2
)2−1
(2)−6
7
9
−[
3
2
×(−
4
5
)+0.2+1
3
5
÷1
1
7
]
(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
×(−
1
2
)3−3×(−
1
2
)2−1
(2)−6
7
9
−[
3
2
×(−
4
5
)+0.2+1
3
5
÷1
1
7
]
(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
×(−
1
2
)3−3×(−
1
2
)2−1
(2)−6
7
9
−[
3
2
×(−
4
5
)+0.2+1
3
5
÷1
1
7
]
(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
1
2
11223−3×(−
1
2
)2−1
(2)−6
7
9
−[
3
2
×(−
4
5
)+0.2+1
3
5
÷1
1
7
]
(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
×(−
1
2
)2−1
(2)−6
7
9
−[
3
2
×(−
4
5
)+0.2+1
3
5
÷1
1
7
]
(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
×(−
1
2
)2−1
(2)−6
7
9
−[
3
2
×(−
4
5
)+0.2+1
3
5
÷1
1
7
]
(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
1
2
11222−1
(2)−6
7
9
−[
3
2
×(−
4
5
)+0.2+1
3
5
÷1
1
7
]
(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001

−6
7
9
−[
3
2
×(−
4
5
)+0.2+1
3
5
÷1
1
7
]
(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
7
9
7799
3
2
3322
4
5
4455
3
5
3355
1
7
1177
1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
1
5
1155
5
16
551616
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
1
1×2
111×21×2
1
2×3
112×32×3
1
3×4
113×43×4
1
2000
1120002000
1
2001
1120012001
▼优质解答
答案和解析
(1)2×(−
1
2
)3−3×(−
1
2
)2−1=2×(−
1
8
)−3×
1
4
-1=-
1
4
3
4
−1=-2;
(2)−6
7
9
−[
3
2
×(−
4
5
)+0.2+1
3
5
÷1
1
7
]
=-
61
9
-(-1.2+0.2+
8
5
×
7
8

=-
61
9
-(-1+
7
5

=-
323
45

(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)=1-[1-(1+
16
5
×
5
16
)×3]÷(-1)=1-(1-6)÷(-1)=1-5=-4;
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
2×(−
1
2
111222)3−3×(−
1
2
)2−1=2×(−
1
8
)−3×
1
4
-1=-
1
4
3
4
−1=-2;
(2)−6
7
9
−[
3
2
×(−
4
5
)+0.2+1
3
5
÷1
1
7
]
=-
61
9
-(-1.2+0.2+
8
5
×
7
8

=-
61
9
-(-1+
7
5

=-
323
45

(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)=1-[1-(1+
16
5
×
5
16
)×3]÷(-1)=1-(1-6)÷(-1)=1-5=-4;
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
3−3×(−
1
2
111222)2−1=2×(−
1
8
)−3×
1
4
-1=-
1
4
3
4
−1=-2;
(2)−6
7
9
−[
3
2
×(−
4
5
)+0.2+1
3
5
÷1
1
7
]
=-
61
9
-(-1.2+0.2+
8
5
×
7
8

=-
61
9
-(-1+
7
5

=-
323
45

(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)=1-[1-(1+
16
5
×
5
16
)×3]÷(-1)=1-(1-6)÷(-1)=1-5=-4;
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
2−1=2×(−
1
8
)−3×
1
4
-1=-
1
4
3
4
−1=-2;
(2)−6
7
9
−[
3
2
×(−
4
5
)+0.2+1
3
5
÷1
1
7
]
=-
61
9
-(-1.2+0.2+
8
5
×
7
8

=-
61
9
-(-1+
7
5

=-
323
45

(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)=1-[1-(1+
16
5
×
5
16
)×3]÷(-1)=1-(1-6)÷(-1)=1-5=-4;
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
(−
1
8
111888)−3×
1
4
111444-1=-
1
4
3
4
−1=-2;
(2)−6
7
9
−[
3
2
×(−
4
5
)+0.2+1
3
5
÷1
1
7
]
=-
61
9
-(-1.2+0.2+
8
5
×
7
8

=-
61
9
-(-1+
7
5

=-
323
45

(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)=1-[1-(1+
16
5
×
5
16
)×3]÷(-1)=1-(1-6)÷(-1)=1-5=-4;
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
1
4
111444−
3
4
333444−1=-2;
(2)−6
7
9
−[
3
2
×(−
4
5
)+0.2+1
3
5
÷1
1
7
]
=-
61
9
-(-1.2+0.2+
8
5
×
7
8

=-
61
9
-(-1+
7
5

=-
323
45

(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)=1-[1-(1+
16
5
×
5
16
)×3]÷(-1)=1-(1-6)÷(-1)=1-5=-4;
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
−6
7
9
777999−[
3
2
333222×(−
4
5
444555)+0.2+1
3
5
333555÷1
1
7
111777]
=-
61
9
-(-1.2+0.2+
8
5
×
7
8

=-
61
9
-(-1+
7
5

=-
323
45

(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)=1-[1-(1+
16
5
×
5
16
)×3]÷(-1)=1-(1-6)÷(-1)=1-5=-4;
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
61
9
616161999-(-1.2+0.2+
8
5
×
7
8

=-
61
9
-(-1+
7
5

=-
323
45

(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)=1-[1-(1+
16
5
×
5
16
)×3]÷(-1)=1-(1-6)÷(-1)=1-5=-4;
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
8
5
888555×
7
8

=-
61
9
-(-1+
7
5

=-
323
45

(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)=1-[1-(1+
16
5
×
5
16
)×3]÷(-1)=1-(1-6)÷(-1)=1-5=-4;
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
7
8
777888)
=-
61
9
-(-1+
7
5

=-
323
45

(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)=1-[1-(1+
16
5
×
5
16
)×3]÷(-1)=1-(1-6)÷(-1)=1-5=-4;
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
61
9
616161999-(-1+
7
5

=-
323
45

(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)=1-[1-(1+
16
5
×
5
16
)×3]÷(-1)=1-(1-6)÷(-1)=1-5=-4;
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
7
5
777555)
=-
323
45

(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)=1-[1-(1+
16
5
×
5
16
)×3]÷(-1)=1-(1-6)÷(-1)=1-5=-4;
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
323
45
323323323454545;
(3)1−{1−[1−3
1
5
(−
5
16
}]×3}÷(−1)=1-[1-(1+
16
5
×
5
16
)×3]÷(-1)=1-(1-6)÷(-1)=1-5=-4;
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
1−{1−[1−3
1
5
111555(−
5
16
555161616}]×3}÷(−1)=1-[1-(1+
16
5
×
5
16
)×3]÷(-1)=1-(1-6)÷(-1)=1-5=-4;
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
16
5
161616555×
5
16
555161616)×3]÷(-1)=1-(1-6)÷(-1)=1-5=-4;
(4)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
2000
×
1
2001
=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
1
1×2
1111×21×21×2+
1
2×3
1112×32×32×3+
1
3×4
1113×43×43×4+…+
1
2000
111200020002000×
1
2001
111200120012001=1-
1
2
+
1
2
1
3
+
1
3
1
4
+…+
1
2000
1
2001
=1-
1
2001
2000
2001
1
2
111222+
1
2
111222−
1
3
111333+
1
3
111333−
1
4
111444+…+
1
2000
111200020002000−
1
2001
111200120012001=1-
1
2001
2000
2001
1
2001
111200120012001=
2000
2001
200020002000200120012001.