We use fractions often when cooking. 1/2 sugar, 3/4 tablespoons of salt. What if you have a recipe you need to cut in half? Then, you would need to divide all of those measurements by 2, which is the same thing as multiplying by 1/2. Let's learn how to do just that. Multiplying fractions is straightforward; just multiply the numerators together and multiply the denominators together. Then, reduce the fraction. Let's get started.