问题 解答题
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]
答案

(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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