Lesson objective: Solve a complex problem using various strategies for multidigit multiplication.
This lesson provides an opportunity for students to apply their knowledge and understanding of multidigit multiplication strategies to a reallife situation. Students are asked to create a disaster relief package from a list of specified items and then determine the cost for 5 shipments of 75 relief packages. The cost of each relief package has a predetermined range.
Key Concept students will use:

We can multiply whole numbers of up to four digits using a variety of strategies; the choice of strategy does not change the quantities involved or the relationships between them.
Skills students will use:
 decomposition of single and multidigit whole numbers by place value or by creating friendly numbers for use in multiplication problems (Grade 4, Unit 2).
 the area model for multiplication (Grade 4, Unit 2).
Students engage in Mathematical Practice 1, make sense of problems and persevere in solving them as they analyze the problem and determine a strategy for solving it. Students engage in Mathematical Practice 8, look for and express regularity in repeated reasoning as they examine similarities and differences between strategies.
Key vocabulary:
 area model
 decompose
 distributive property
 partial product
 place value
 properties of operations
 relationship