6÷ 3/8 – 3/8 ÷6

4/7 × 5/9 + 3/7 × 5/9

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

7/8 + ( 1/8 + 1/9 )

9 × 5/6 + 5/6

3/4 × 8/9 - 1/3 6 ×( 1/2 + 2/3 )

16.8 × 4/5 + 8 × 1 1/5

17.3 1 × 5/6 – 5/6

18.9/7 - ( 2/7 – 10/2 1 )

19.5/9 × 18 – 14 × 2/7

20.4/5 × 25/ 16 + 2/3 × 3/4

2 1. 14 × 8/7 – 5/6 × 12/ 15

22. 17/32 – 3/4 × 9/24

23.3 × 2/9 + 1/3

24.5/7 × 3/25 + 3/7

25.3/ 14 ×× 2/3 + 1/6

26. 1/5 × 2/3 + 5/6

27.9/22 + 1/ 1 1 ÷ 1/2

28.5/3 × 1 1/5 + 4/3

29.45 × 2/3 + 1/3 × 15

30.7/ 19 + 12/ 19 × 5/6

3 1. 1/4 + 3/4 ÷ 2/3