1 8 ×14÷ 7 8 ( 4 5 + 3 10 )÷ 3 10 5 6 ÷( 1 2 + 5 6 ) 3 4 ÷ 1
1个回答

(1)

1

8 ×14÷

7

8 ,

=

1

8 ×(14×

8

7 ),

=

1

8 ×16,

=2;

(2)(

4

5 +

3

10 )÷

3

10 ,

=(

4

5 +

3

10 )×

10

3 ,

=

4

5 ×

10

3 +

3

10 ×

10

3 ,

=

8

3 +1,

=3

2

3 ;

(3)

5

6 ÷(

1

2 +

5

6 ),

=

5

6 ÷

8

6 ,

=

5

8 ;

(4)

3

4 ÷

15

16 ÷

5

6 ,

=

3

4 ×

16

15 ×

6

5 ,

=

4

5 ×

6

5 ,

=

24

25 ;

(5)1÷

1

100 ÷

1

100 ,

=100×100,

=10000;

(6) 4

4

5 ×4

3

5 - 4

4

5 ×3.6,

= 4

4

5 ×(4

3

5 -3.6),

= 4

4

5 ×1,

= 4

4

5 ;

(7)

44

45 ×46,

=

44

45 ×(45+1),

=

44

45 ×45+

44

45 ×1,

=44+

44

45 ,

=44

44

45 ;

(8)(

1

2 +

2

3 +

3

4 )×24,

=

1

2 ×24+

2

3 ×24+

3

4 ×24,

=12+16+18,

=28+18,

=46.