a) 7 • 8 = 56 b) 4 • 9 = 36 c)8 • 6 = 48
56 : 8 = 7 36 : 9 = 4 40 : 8 = 6
56: 7 = 8 36 : 4 = 9 40 : 6 = 8
3 • 9 = 27 6 • 5 = 30 9 • 7 = 63
27 : 3 = 9 30 : 5 = 6 63 : 9 = 7
27 : 9 = 3 30 : 6 = 5 63 : 7 = 9
5 • 4 = 20 7 • 7 = 49 9 • 8 = 72
20 : 4 = 5 49 : 7 = 7 72 : 9 = 8
20 : 5 = 4 72 : 8 = 9