Calculează 10 x 4 = 100 x 9 = 15 x 10 = 10 x 5 = 100 x 8 = 20 x 60 = 10 x 90 = 2 x 100 = 30 x 70 = 10 x 7 = 7 x 100 = 40 x 5 = 3 x 20 = 5 x 100 = 60 x 60 =