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314×79×35  211+533×334×45+15×34 12×45-11074×17

2022-08-14 02:39:21 问答库 阅读 200 次

问题详情

3

14

×7

9

×3

5

  

2

11

+5

33

×3

3

4

×4

5

+1

5

×3

4

 

1

2

×4

5

-1

10

7

4

×17+3

4

×17 

39

50

-1

2

-1

3

-1

6

20×(1

4

-1

5

+1

2

)  24×(5

6

-3

4

+2

3

)

2

3

×5

9

+2

3

×3

8

 

4

5

-(4

5

-5

12

)

参考答案

(1)314×79×35=110;

(2)211+533×3,
=211+511,
=711;

(3)34×45+15×34,
=34×(45+15),
=34×1,
=34;

(4)12×45-110,
=410-110,
=310;

(5)74×17-34×17,
=(74-34)×17,
=1×17,
=17;

(6)3950-12-13-16,
=3950-(12+13+16),
=3950-1,
=-1150;

(7)20×(14-15+12),
=20×14-20×15+20×12,
=5-4+10,
=11;

(8)24×(56-34+23),
=24×56-24×34+24×23,
=20-18+16,
=18;

(9)23×59+23×38
=23×(59+38),
=23×6772,
=67108;

(10)45-(45-512)
=45-45+512,
=512.

考点: