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列递等式计算.(1)78-35+18-25=(2)56÷710×57=(3)(1112-16

2022-08-14 02:53:07 问答库 阅读 200 次

问题详情

列递等式计算.
(1)7

8

-3

5

+1

8

-2

5

=
(2)56÷7

10

×5

7

=
(3)(11

12

-1

6

)÷1

18

×1

3

=
(4)14×14

39

-14

39

÷14=
(5)11

9

÷[322

5

-(32.4-1

3

×0.25)]×12=
(6)201

2

-61

4

×2

5

2+12

3

÷41

6

=.

参考答案

(1)78-35+18-25
=78+18-(35+25)
=1-1
=0;

(2)56÷710×57
=56×107×57
=4007;

(3)(1112-16)÷118×13
=34×18×13
=92;

(4)14×1439-1439÷14
=14×1439-1439×114
=1439×(14-114)
=1439×19514
=5;

(5)119÷[3225-(32.4-13×0.25)]×12
=119÷[3225-(32.4-112)]×12
=119÷[3225-32.4+112]×12
=109×12×12
=160;

(6)2012-614×252+123÷416
=(2012-614×25)÷(2+123÷416)
=(2012-254×25)÷(2+53×625)
=(2012-212)÷(2+25)
=18×512
=152.

考点:等式