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脱式计算 怎样简便就怎样算.101×99102(456-334)÷(314+27)(0.92

2022-08-14 02:30:25 问答库 阅读 200 次

问题详情

脱式计算,怎样简便就怎样算.
101×99

102

(45

6

-33

4

)÷(3

14

+2

7

)(0.92+2

25

)÷(4-27

9

)

36×(2

3

+1

6

-3

4

)13

8

×3

7

+3

8

×3

7

4

9

÷〔5

6

-(1

6

+1

3

)〕

参考答案

(1)101×99102
=(102-1)×99102
=102×99102-99102
=99-99102
=98134

(2)(456-334)÷(314+27
=1112÷714
=1312×2
=136

(3)(0.92+225)÷(4-279
=(2325+225)÷129
=1×911
=911

(4)36×(23+16-34
=36×23+36×16-36×34
=24+6-27
=3;

(5)138×37+38×37
=37×(138+38)
=37×2
=67

(6)49÷〔56-(16+13)〕
=49÷(56-16-13)
=49÷13
=49×3
=43

考点: