16 • 3 = (10 + 6) • 3 = 30 + 18 = 48
48 : 4 = (40 + 8) : 4 = 10 + 2 = 12
12 : 2 = 6
6 • 6 = 36
36 : 9 = 4
4 • 8 = 32
32 • 2 = (30 + 2) • 2 = 60 + 4 = 64
64 : 4 = (40 + 24) : 4 = 10 + 6 = 16
16 • 3 = (10 + 6) • 3 = 30 + 18 = 48
48 : 4 = (40 + 8) : 4 = 10 + 2 = 12
12 : 2 = 6
6 • 6 = 36
36 : 9 = 4
4 • 8 = 32
32 • 2 = (30 + 2) • 2 = 60 + 4 = 64
64 : 4 = (40 + 24) : 4 = 10 + 6 = 16