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49÷[45-(15+13)]13+3-(14+112)3×(215+112)-2534×5

2022-08-14 02:48:02 问答库 阅读 200 次

问题详情

4

9

÷[4

5

-(1

5

+1

3

)]1

3

+3-(1

4

+1

12

)3×(2

15

+1

12

)-2

5

3

4

×5

7

×4

3

-1

2

15

16

+(7

16

-1

4

1

2

23-8

9

×3

8

÷1

27

(1

3

-1

4

1

2

+5

6

1

2

×3+1

2

÷1

5

2

3

+(4

7

+1

2

7

25

5

6

+2

5

÷4.

参考答案

49÷[45-(15+13)],
=49÷[45-15-13],
=49÷(35-13),
=49÷415
=53

13+3-(14+112),
=13+3-13
=3;

③3×(215+112)-25
=3×215+3×112-25
=25+14-25
=14

34×57×43-12
=34×43×57-12
=57-12
=314

1516+(716-14)÷12
=1516+316÷12
=1516+616
=2116

⑥23-89×38÷127
=23-9,
=14;

⑦(13-14)÷12+56
=112÷12+56
=16+56
=1;

12×3+12÷15
=12×(3+5),
=12×8,
=4;

23+(47+12)×725
=23+1514×725
=23+310
=2930

⑩8×56+25÷4,
=203+110
=20330

考点: