This is a task designed for fifth graders learning how to multiply mixed numbers. Students are asked to critique a student’s strategy to multiply mixed numbers, which ends up addressing a common misconception in multiplication of mixed numbers. Students must determine if adding the product of the whole numbers to the product of the fractions is equal to multiplying the two mixed numbers. Students are asked to decide if this is a rule that works, and explain their answer.

Microsoft Word version: 5_NF_FractionsMultiplication_Problem_Critique_5-32

PDF version: 5_NF_FractionsMultiplication_Problem_Critique_5-32