Lesson objective: Apply understanding of the relationship of multiplication and division to solve real-world problems

This lesson provides an opportunity for students to apply their knowledge and understanding of multiplication as scaling and division of fractions to a real-life situation. Students are asked to compare the snowfall totals of three mountains given a fraction of show that has melted.

Key Concept students will use:

- The relationship of multiplication and division remain the same regardless of the numbers used.

Skills students will use:

- interpret multiplication as scaling (Grade 5, Unit 7)
- divide a whole number by a unit fraction (Grade 5, Unit 8)

Students engage in Mathematical Practice 7 (Look for and make use of structure) as they apply their knowledge of the relationship between multiplication and division to solve a missing factor multiplication problem.

**Key vocabulary: **

- division
- scaling multiplication
- unit fraction