a) 256% * 12 = 256/100 * 12 = 256 * 12/100 = 3072 : 100 = 30,72
b) 12% * 256 = 12/100 * 256 = 12 * 256/100 = 30,72
c) 2,56% * 12 = 2,56 * 12/100 = 0,3072
d) 25,6% * 12 = 25,6 * 12/100 = 3,072
e) 1,2% * 256 = 1,2/100 * 256 = 3,072
f) 120% * 256 = 120/100 * 256 = 307,2
g) 12% * 2,56 = 12/100 * 2,56 = 0,3072
h) 2,56% * 1,2 = 2,56/100 * 1,2 = 0,03072