1. 3/7 × 49/9 - 4/3
2. 8/9 × 15/36 + 1/27 4. 8× 5/4 + 1/4 6. 4/7 × 5/9 + 3/7 × 5/9 8. 7/8 + ( 1/8 + 1/9 ) 10. 3/4 × 8/9 - 1/3 12. 6 ×( 1/2 + 2/3 ) 14. 31 × 5/6 - 5/6 17. 4/5 × 25/16 + 2/3 × 3/4 20. 3 × 2/9 + 1/3 23. 1/5 × 2/3 + 5/6
3. 12× 5/6 - 2/9 ×3 5. 6÷ 3/8 - 3/8 ÷6 7. 5/2 -( 3/2 + 4/5 ) 9. 9 × 5/6 + 5/6 11. 7 × 5/49 + 3/14 13. 8 × 4/5 + 8 × 11/5 16. 5/9 × 18 - 14 × 2/7