Lesson objective: Apply multiplication and division to solve a real-world problem.

This lesson provides an opportunity for students to apply their knowledge and understanding of multiplication and division to a real-life situation. Students are asked to determine the amount and cost of menu items needed to feed the the attendees of a school field day.

Key Concept students will use:

- Multiply using the standard algorithm
- Use division strategies to solve division problems

Skills students will use:

- the standard algorithm for multiplication
- rectangular array, area model, or partial quotients strategy for division

Students engage in Mathematical Practice 1 (Make sense of problems and persevere in solving them) as they determine the number of items needed for a math night and the total costs for the items. They also engage in Mathematical Practice 8 (Look for and express regularity in repeated reasoning) as they solve division problems using partial quotients and different representations, while looking for increasingly efficient ways to divide. Students will also need to interpret remainders for this problem.

**Key vocabulary: **

- division
- multiplication
- quotient
- product
- remainder
- standard algorithm