200·80 = 700:70 = 50:50 = 200·60 = 700·50 = 4800:80 = 1000:20 = 1800:20 = 300:60 = 1600:80 = 2800:70 = 80·400 = 300·10 = 7600:40 = 500·30 = 7000:10 = 200·20 = 1200:30 = 800:10 = 900·60 = 900:30 = 5400:60 = 1000·60 = 7000·90 = 600:20 = 300·80 = 1800:60 = 200·30 = 400:400 = 300·70 = 500:50 = 3200:40 = 800·90 = 300:60 = 400·80 = 200·70 = 1200:30 = 300·50 = 13500:90 = 2000:50 =

1. 200 · 80 = 16000 2. 700 : 70 = 10 3. 50 : 50 = 1 4. 200 · 60 = 12000 5. 700 · 50 = 35000 6. 4800 : 80 = 60 7. 1000 : 20 = 50 8. 1800 : 20 = 90 9. 300 : 60 = 5 10. 1600 : 80 = 20 11. 2800 : 70 = 40 12. 80 · 400 = 32000 13. 300 · 10 = 3000 14. 7600 : 40 = 190 15. 500 · 30 = 15000 16. 7000 : 10 = 700 17. 200 · 20 = 4000 18. 1200 : 30 = 40 19. 800 : 10 = 80 20. 900 · 60 = 54000 21. 900 : 30 = 30 22. 5400 : 60 = 90 23. 1000 · 60 = 60000 24. 7000 · 90 = 630000 25. 600 : 20 = 30 26. 300 · 80 = 24000 27. 1800 : 60 = 30 28. 200 · 30 = 6000 29. 400 : 400 = 1 30. 300 · 70 = 21000 31. 500 : 50 = 10 32. 3200 : 40 = 80 33. 800 · 90 = 72000 34. 300 : 60 = 5 35. 400 · 80 = 32000 36. 200 · 70 = 14000 37. 1200 : 30 = 40 38. 300 · 50 = 15000 39. 13500 : 90 = 150 40. 2000 : 50 = 40