Fraction and Mixed-Number Sums Practice Test

What number must be added to \(3\frac{2}{5}\) to obtain a sum of \(7\frac{1}{3}\)?

A recipe for a batch of muffins requires a total of \(4\frac{1}{2}\) cups of dry ingredients. The recipe calls for \(1\frac{3}{4}\) cups of flour and \(1\frac{1}{3}\) cups of sugar. After adding the flour and sugar, how many cups of other ingredients are needed?