Question

计算，写出主要过程，能简算的要简算． 3 4 + 3 4 ÷ 2 9 × 2 27 =	（3- 5 12 ）× 3 31 - 1 4 =	6- 3 8 ÷ 27 4 - 7 18 =
3 7 ÷ 15 4 + 3 4 × 12 7 =	9 48 ÷ 3 4 ÷6=	[（2- 1 4 ）÷ 3 4 ]× 3 4 =

Answer 1

①

3

4

+

3

4

÷

2

9

×

2

27

=

3

4

+

3

4

×

9

2

×

2

27

=

3

4

+

27

8

×

2

27

=

3

4

+

1

4

=1；

②（3-

5

12

）×

3

31

-

1

4

=

31

12

×

3

31

-

1

4

=

1

4

-

1

4

=0；

③6-

3

8

÷

27

4

-

7

18

=6-

3

8

×

4

27

-

7

18

=6-

1

18

-

7

18

=5

5

9

；

④

3

7

÷

15

4

+

3

4

×

12

7

=

3

7

×

4

15

+

3

4

×

12

7

=

3

7

×（

4

15

+3）
=

3

7

×

49

15

=1

2

5

；

⑤

9

48

÷

3

4

÷6
=

9

48

×

4

3

×

1

6

=

1

24

；


⑥[（2-

1

4

）÷

3

4

]×

3

4

=[

7

4

×

4

3

]×

3

4

=

7

3

×

3

4

=1

3

4

．