1420:20=71 1800x60= 1440:90=16 130x40= 1140:60=19 1100x60= 5600:70= 120x40= 8800:80= 1700x90= 4200:30= 1200x80= 7000:50= 4500:30= 180x40= 7800:60= 2800:20= 7000:50= 130x10= 360:30= 8500:50= 7600:40= 680:40= 1900x30= 1800x80= 110x30= 8000:16= 480:160= 850:170= 600:40= 1200:12= 1700x40= 960:160= 1600x30= 5100:17=

Решение:

1. \( 1420 : 20 = 71 \)


2. \( 1800 \times 60 = 108000 \)


3. \( 1440 : 90 = 16 \)


4. \( 130 \times 40 = 5200 \)


5. \( 1140 : 60 = 19 \)


6. \( 1100 \times 60 = 66000 \)


7. \( 5600 : 70 = 80 \)


8. \( 120 \times 40 = 4800 \)


9. \( 8800 : 80 = 110 \)


10. \( 1700 \times 90 = 153000 \)


11. \( 4200 : 30 = 140 \)


12. \( 1200 \times 80 = 96000 \)


13. \( 7000 : 50 = 140 \)


14. \( 4500 : 30 = 150 \)


15. \( 180 \times 40 = 7200 \)


16. \( 7800 : 60 = 130 \)


17. \( 2800 : 20 = 140 \)


18. \( 7000 : 50 = 140 \)


19. \( 130 \times 10 = 1300 \)


20. \( 360 : 30 = 12 \)


21. \( 8500 : 50 = 170 \)


22. \( 7600 : 40 = 190 \)


23. \( 680 : 40 = 17 \)


24. \( 1900 \times 30 = 57000 \)


25. \( 1800 \times 80 = 144000 \)


26. \( 110 \times 30 = 3300 \)


27. \( 8000 : 16 = 500 \)


28. \( 480 : 160 = 3 \)


29. \( 850 : 170 = 5 \)


30. \( 600 : 40 = 15 \)


31. \( 1200 : 12 = 100 \)


32. \( 1700 \times 40 = 68000 \)


33. \( 960 : 160 = 6 \)


34. \( 1600 \times 30 = 48000 \)


35. \( 5100 : 17 = 300 \)

Ответ: 71; 108000; 16; 5200; 19; 66000; 80; 4800; 110; 153000; 140; 96000; 140; 150; 7200; 130; 140; 140; 1300; 12; 170; 190; 17; 57000; 144000; 3300; 500; 3; 5; 15; 100; 68000; 6; 48000; 300.