1.4/7× 1/7÷4/7× 1/7

2. 12×(3/4- 1/6)

3. 12×( 1/6+ 1/2)

4.70× 1/35+40× 1/35

5.4/5×8× 10

6.6×( 1/2+ 1/3)

7.(5/6-2/3)×7/9

8.( 1/ 12+ 1/5)×60

9.20×( 1- 1/4- 1/5)

10. 1/3×7+2/3×7

1 1.3/4×99+3/4

12.2/7×3/4× 14

13.8/9×27+ 1/9×27

14.2/5×2/7×5/8

15. 1/4×8÷ 1/4×8

16.20×( 1/5+ 1/4)

17.( 1/2- 1/4)× 12

18.5/4×3.6×8

19.( 1/8+ 1/4)× 16

20.2/5-2/5×5/ 12

2 1.( 1/8+ 1/24)×96

22. 17/4× 10 1- 17/4

23.28×(4-8/7)

24.(2/3-4/7)×2 1

25.56×( 1/7- 1/8)

Fractional division:

1.3/7 × 49/9 - 4/3

2.8/9 × 15/36 + 1/27

3. 12× 5/6 – 2/9 ×3

4.8× 5/4 + 1/4

5.6÷ 3/8 – 3/8 ÷6

6.4/7 × 5/9 + 3/7 × 5/9

7.5/2 -( 3/2 + 4/5 )

8.7/8 + ( 1/8 + 1/9 )

9.9 × 5/6 + 5/6

10.3/4 × 8/9 - 1/3

1 1.7 × 5/49 + 3/ 14

12.6 ×( 1/2 + 2/3 )

13.8 × 4/5 + 8 × 1 1/5

14.3 1 × 5/6 – 5/6

15.9/7 - ( 2/7 – 10/2 1 )

16.5/9 × 18 – 14 × 2/7

17.4/5 × 25/ 16 + 2/3 × 3/4

18. 14 × 8/7 – 5/6 × 12/ 15

19. 17/32 – 3/4 × 9/24

20.3 × 2/9 + 1/3

2 1.5/7 × 3/25 + 3/7

22.3/ 14 ×× 2/3 + 1/6

23. 1/5 × 2/3 + 5/6

24.9/22 + 1/ 1 1 ÷ 1/2

25.5/3 × 1 1/5 + 4/3

26.45 × 2/3 + 1/3 × 15

27.7/ 19 + 12/ 19 × 5/6

28. 1/4 + 3/4 ÷ 2/3

29.8/7 × 2 1/ 16 + 1/2

30. 10 1 × 1/5 – 1/5 × 2 1

Percent oral calculation questions:

12÷3/5=

9÷6/7=

30÷5/6=

4×(3/2 )=

4×7/5 =

3÷4/5=

24× 16/7 =

4÷4/5=

6÷3/4=

10÷2/5=

18÷4/9=

4×4/5=

6×3/4=

10×2/5=

18×4/9=

3÷3/4=

2÷ 1/3=

6÷4/5=

1÷5/7=

3/4÷3= 1

1/3÷2=

4/5÷6=

5/7÷ 1=

2/ 1*2=

3/ 1*3=

3/2*3=

3/ 1*6=

4/3*8=

5/3*20=

7/3* 14=

8/7*40=

4/3* 16=

9/5*27=

2/ 1*30=

12/7*24=

30/ 1*30=

5 1/9* 102=

19/9*76=

4/9*8=

5/8*90=

99/98*99=

3/ 14*6=

7/ 1*28=

10/ 1*90=

5/3* 105=

19/7*38=

5/ 1*25=

8/ 19* 16=

6 1/60* 122=

7/2*28=

6/ 1*48=8

9/7* 18=

25/7* 100=

9/5*8 1=

8/9* 16=

I hope to adopt it, O(∩_∩)O Thank you! ! !