1) 960: 3 = 321 600+6*7:2 = 6*7 = 42 : 2 = 21 + 600 = 621
780 : 6 = 94 945- 9*5:3 = 9*5 = 45 : 3 = 15 = 945- 15 = 930
1) 960: 3 = 321 600+6*7:2 = 6*7 = 42 : 2 = 21 + 600 = 621
780 : 6 = 94 945- 9*5:3 = 9*5 = 45 : 3 = 15 = 945- 15 = 930