A-A+

计算:(1)0.47-456-(-1.53)-116;(2)(910-115+16)×(-3

2022-08-15 16:19:09 问答库 阅读 207 次

问题详情

计算:
(1)0.47-45

6

-(-1.53)-11

6


(2)(9

10

-1

15

+1

6

)×(-30);
(3)-15-[-1-(4-20)];
(4)(1

3

-1

2

)÷11

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].

参考答案

(1)原式=(0.47+1.53)+(-456-116)
=2-6
=-4;

(2)原式=-910×30+115×30-16×30
=-27+2-5
=-30;

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

(4)原式=-16×45×10×103
=-409;

(5)原式=-8+18×16-1
=-8+2-1
=-7;

(6)原式=1-12+12-13+…+11999-12000
=1-12000
=19992000;

(7)原式=100+16÷16-15×25-100
=100+1-5-100
=-4;

(8)原式=-1-[2-(1-13×12)]×[9-4]
=-1-[2-(1-16)]×5
=-1-116×5
=-1-556
=-656.

考点: