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计算:(1)24÷(12-13+14-16)(2)[1.25÷18-(3115+2.45)]

2022-08-14 02:31:53 问答库 阅读 200 次

问题详情

计算:
(1)24÷(1

2

-1

3

+1

4

-1

6

)
(2)[1.25÷1

8

-(31

15

+2.45)]×0.48
(3)2006÷20062006

2007

+1÷2008
(4)1÷(1

2×3

+1

3×4

+1

4×5

+1

5×6

)
(5)(81

4

-0.75)÷31

2

(5-42

5

)÷10

+(3.25-17

8

)×13

5

(2-13

8

)÷31

8

参考答案

(1)24÷(12-13+14-16)
=24÷14,
=96;

(2)[1.25÷18-(3115+2.45)]×0.48
=[1.25÷0.125-(3115+2920)]×0.48,
=[10-53160]×1225,
=26960×1225,
=269125;

(3)2006÷200620062007+1÷2008
=2006÷2007×2006+20062007+12008,
=2006×2007(2007+1)×2006+12008,
=2006×20072008×2006+12008,
=20072008+12008,
=1;

(4)1÷(12×3+13×4+14×5+15×6)
=1÷(12-13+13-14+14-15+15-16),
=1÷13,
=3;

(5)(814-0.75)÷312(5-425)÷10+(3.25-178)×135(2-138)÷318
=(8.25-0.75)÷3.5(5-4.4)÷10+(3.25-1.875)×1.6(2-1.375)÷3.125,
=7.5÷3.50.6÷10+1.625×1.60.625÷3.125,
=157÷320+2.60.2,
=1007+13,
=1427+13,
=2127.

考点: