计算 ( 17 18 - 3 4 + 1 6 )÷ 1 36 2 3 ÷8+ 1 3 × 1 8 5 16 ×12× 3
1个回答

(1)(

17

18 -

3

4 +

1

6 )÷

1

36 ,

=(

17

18 -

3

4 +

1

6 )×36,

=

17

18 ×36-

3

4 ×36+

1

6 ×36,

=34-27+6,

=7+6,

=13;

(2)

2

3 ÷8+

1

3 ×

1

8 ,

=

2

3 ×

1

8 +

1

3 ×

1

8 ,

=(

2

3 +

1

3 )×

1

8 ,

=1×

1

8 ,

=

1

8 ;

(3)

5

16 ×12×

3

4 ×16,

=(

5

16 ×16)×(

3

4 ×12),

=5×9,

=45;

(4)

9

16 ÷(

3

8 +

1

16 ),

=

9

16 ÷

7

16 ,

=

9

7 ;

(5)

4

5 ×

5

6 +

2

5 ÷

3

5 ,

=

2

3 +

2

3 ,

=

4

3 ;

(6)

3

4 ×40%+

3

4 ×60%,

=

3

4 ×(40%+60%),

=

3

4 ×1,

=

3

4 ;

(7)

4

5 ÷[(

5

8 -

1

2 )÷

5

8 ],

=

4

5 ÷[

1

8 ÷

5

8 ],

=

4

5 ÷

1

5 ,

=4;

(8)(

5

6 -

3

7 )×42,

=

5

6 ×42-

3

7 ×42,

=35-18,

=17.