Ответ:12 · 10 = 120; 12 · 15 = 180; 12 · 101 = 1212.10 · 10 = 100; 10 · 15 = 150; 10 · 101 = 1010.40 · 10 = 400; 40 · 15 = 600; 40 · 101 = 4040.64 · 10 = 640; 64 · 15 = 960; 64 · 101 = 6464.