1) 4 • 7 = 28, 7 • 9 = 63, 8 • 6 = 48, 2 • 9 = 18;
2) 6 • 7 = 42, 7 • 6 = 42; 8 • 9 = 72, 9 • 8 = 72;
3) 28 : 7 = 4, 24 : 6 = 4, 63 : 7 = 9, 45 : 9 = 5;
4) 7, 14, 21, 28, 35. 42, 49, 63;
5) 9, 18, 27, 36, 45. 54, 63, 72, 81;
6) Умножены на 4, поделены на 2 и умножены на 9.