Question

Jessica is baking a cake. The recipe says that she has to mix 96 grams of sugar to the flour. Jessica knows that 1 cup of this particular sugar has a mass of 128 grams. She added half of a cup of sugar to the flour. Should Jessica add more sugar to make the exact recipe, or did she go over and by what amount?

Answer 1

1 cup is 128
half a cup is 64 128 divided by 2
1 fourth of a cup is 32 128 divded by 4
3 fourths of a cup is 96 32 times 3 
so she needs to add another fourth to be exact