Multiplying Mixed Numbers Song | Mixed Number Multiplication Grades: 5th Grade Go on a Safari and learn how to multiply mixed numbers with unlike denominators in this Multiplying Mixed Numbers Song. In this video, viewers will learn that Mixed Number Multiplication is very similar to multiplying fractions, but with one extra step of having to convert the mixed numbers to improper fractions first. This Video aligns with the following Common Core Standards: CCSS 5.NF.6 Solve real world problems involving multiplication of fractions and mixed numbers, e.g., by using visual fraction models or equations to represent the problem.