УМНОЖЕНИЕ И 150.90 = 150.90 = 300:20 = 9600:80 = 1170: 130 = 140.30 = 680:40 = 150.70 = 190.30 = 780:60 = 5500:50 = 70.800 = 910:70 = 5600:70 = 330.60 = 180.40 = 1530:170 = 700.20 = 210.70 = 1700:10 = 810.90 = 1120:140= 1700.20 = 7400.70 = 520:130 = 5040:90 = 600: 120 = 1530:90 = 960: 160 = 330.30 = 1200.80 = 90.310 = 460.60 = 200.30 = 4340:70 = 3000: 150= 6800:80 = 6600:110= 330.50 = 390.60 = 3150:90 = 150:150 = 180.40 = 7000: 140 = 2800:20 = 5100:170 = 7000:50 = 1000.30 = 1800-80 = 800.20 = 3400:20 = 160:40 = 420: 10 = 400.60 = 250.60 = 300.50 = 9000: 100 = 960: 160 = 1260:140 = 150.80 = 2590:70 = 4800:30 = 80.300 = 170.50 = 390.50 = 180:10 = 110.70 = 700.60 = 1900.50 = 2080:40 = 1800-60 = 2760:60 = 7600:40 = 1800-80 = 100.170 = 4500: 150= 8800:80 = 360:30 = 700.40 = 8400:140=

Ответ: Решения представлены ниже.

1. 150 * 90 =

   150 \(\times\) 90 = 13500

2. 150 * 90 =

   150 \(\times\) 90 = 13500

3. 300 : 20 =

   300 \(\div\) 20 = 15

4. 9600 : 80 =

   9600 \(\div\) 80 = 120

5. 1170 : 130 =

   1170 \(\div\) 130 = 9

6. 140 * 30 =

   140 \(\times\) 30 = 4200

7. 680 * 40 =

   680 \(\times\) 40 = 27200

8. 150 * 70 =

   150 \(\times\) 70 = 10500

9. 190 * 30 =

   190 \(\times\) 30 = 5700

10. 780 * 60 =

    780 \(\times\) 60 = 46800

11. 5500 : 50 =

    5500 \(\div\) 50 = 110

12. 70 * 800 =

    70 \(\times\) 800 = 56000

13. 910 : 70 =

    910 \(\div\) 70 = 13

14. 5600 * 70 =

    5600 \(\times\) 70 = 392000

15. 330 * 60 =

    330 \(\times\) 60 = 19800

16. 180 * 40 =

    180 \(\times\) 40 = 7200

17. 1530 : 170 =

    1530 \(\div\) 170 = 9

18. 700 * 20 =

    700 \(\times\) 20 = 14000

19. 210 * 70 =

    210 \(\times\) 70 = 14700

20. 1700 : 10 =

    1700 \(\div\) 10 = 170

21. 810 * 90 =

    810 \(\times\) 90 = 72900

22. 1120 * 140 =

    1120 \(\times\) 140 = 156800

23. 1700 * 20 =

    1700 \(\times\) 20 = 34000

24. 7400 * 70 =

    7400 \(\times\) 70 = 518000

25. 520 : 130 =

    520 \(\div\) 130 = 4

26. 5040 : 90 =

    5040 \(\div\) 90 = 56

27. 600 * 120 =

    600 \(\times\) 120 = 72000

28. 1530 : 90 =

    1530 \(\div\) 90 = 17

29. 960 : 160 =

    960 \(\div\) 160 = 6

30. 330 * 30 =

    330 \(\times\) 30 = 9900

31. 1200 * 80 =

    1200 \(\times\) 80 = 96000

32. 90 * 310 =

    90 \(\times\) 310 = 27900

33. 460 * 60 =

    460 \(\times\) 60 = 27600

34. 200 * 30 =

    200 \(\times\) 30 = 6000

35. 4340 : 70 =

    4340 \(\div\) 70 = 62

36. 3000 : 150 =

    3000 \(\div\) 150 = 20

37. 6800 : 80 =

    6800 \(\div\) 80 = 85

38. 6600 : 110 =

    6600 \(\div\) 110 = 60

39. 330 * 50 =

    330 \(\times\) 50 = 16500

40. 390 * 60 =

    390 \(\times\) 60 = 23400

41. 3150 : 90 =

    3150 \(\div\) 90 = 35

42. 150 * 150 =

    150 \(\times\) 150 = 22500

43. 180 * 40 =

    180 \(\times\) 40 = 7200

44. 7000 : 140 =

    7000 \(\div\) 140 = 50

45. 2800 : 20 =

    2800 \(\div\) 20 = 140

46. 5100 : 170 =

    5100 \(\div\) 170 = 30

47. 7000 : 50 =

    7000 \(\div\) 50 = 140

48. 1000 * 30 =

    1000 \(\times\) 30 = 30000

49. 1800-80 =

    1800 - 80 = 1720

50. 800 * 20 =

    800 \(\times\) 20 = 16000

51. 3400 : 20 =

    3400 \(\div\) 20 = 170

52. 160 * 40 =

    160 \(\times\) 40 = 6400

53. 420 : 10 =

    420 \(\div\) 10 = 42

54. 400 * 60 =

    400 \(\times\) 60 = 24000

55. 250 * 60 =

    250 \(\times\) 60 = 15000

56. 300 * 50 =

    300 \(\times\) 50 = 15000

57. 9000 : 100 =

    9000 \(\div\) 100 = 90

58. 960 : 160 =

    960 \(\div\) 160 = 6

59. 1260 : 140 =

    1260 \(\div\) 140 = 9

60. 150 * 80 =

    150 \(\times\) 80 = 12000

61. 2590 : 70 =

    2590 \(\div\) 70 = 37

62. 4800 : 30 =

    4800 \(\div\) 30 = 160

63. 80.300 =

    80.300 = 24090

64. 170 * 50 =

    170 \(\times\) 50 = 8500

65. 390 * 50 =

    390 \(\times\) 50 = 19500

66. 180:10 =

    180 \(\div\) 10 = 18

67. 110 * 70 =

    110 \(\times\) 70 = 7700

68. 700 * 60 =

    700 \(\times\) 60 = 42000

69. 1900 * 50 =

    1900 \(\times\) 50 = 95000

70. 2080 : 40 =

    2080 \(\div\) 40 = 52

71. 1800-60 =

    1800 - 60 = 1740

72. 2760 : 60 =

    2760 \(\div\) 60 = 46

73. 7600 * 40 =

    7600 \(\times\) 40 = 304000

74. 1800-80 =

    1800 - 80 = 1720

75. 100 * 170 =

    100 \(\times\) 170 = 17000

76. 4500 : 150=

    4500 \(\div\) 150 = 30

77. 8800:80 =

    8800 \(\div\) 80 = 110

78. 360:30 =

    360 \(\div\) 30 = 12

79. 700.40 =

    700 \(\times\) 40 = 28000

80. 8400:140=

    8400 \(\div\) 140 = 60

Ответ: Решения представлены выше.