Fractions dealing with measurements

Question

What is the most efficient method for measuring each ingredient using only 1/3 cup and 1/4 cup

Answer 1

fill the 1/3 cup up, pour it into the 1/4 cup

then left in the 1/3 cup is (1/3-1/4) = 1/12 of a cup

that's a smaller precise measurement, assuming the 1/3 and 1/4 cups are accurately measured themselves

.333... minus .25 = .08333....cup