题目内容

计算:
(1)0.47-4
5
6
-(-1.53)-1
1
6

(2)(
9
10
-
1
15
+
1
6
)×(-30)

(3)-15-[-1-(4-20)];
(4)(
1
3
-
1
2
)÷1
1
4
÷
1
10
×
10
3

(5)16÷(-2)-(-
1
8
)×(-4)2+(-1)2009

(6)
1
1×2
+
1
2×3
+
1
3×4
+…+
1
1999×2000

(7)100+16÷(-2)4-
1
5
×(-5)2-|-100|

(8)-14-[2-(1-
1
3
×0.5)]×[32-(-2)2]
(1)原式=(0.47+1.53)+(-4
5
6
-1
1
6

=2-6
=-4;

(2)原式=-
9
10
×30+
1
15
×30-
1
6
×30
=-27+2-5
=-30;

(3)原式=-15-[-1-(-16)]
=-15-(-1+16)
=-15-15
=-30;

(4)原式=-
1
6
×
4
5
×10×
10
3

=-
40
9


(5)原式=-8+
1
8
×16-1
=-8+2-1
=-7;

(6)原式=1-
1
2
+
1
2
-
1
3
+…+
1
1999
-
1
2000

=1-
1
2000

=
1999
2000


(7)原式=100+16÷16-
1
5
×25-100
=100+1-5-100
=-4;

(8)原式=-1-[2-(1-
1
3
×
1
2
)]×[9-4]
=-1-[2-(1-
1
6
)]×5
=-1-1
1
6
×5
=-1-5
5
6

=-6
5
6
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