In previous lessons students have used the standard algorithm to find products of 3-digit and 2-digit numbers including products with newly composed units. In this lesson, students continue to find products, building fluency in situations with any number of newly composed units. Students learn a center game where they try to make the greatest product using 5 digits which they successively select. Continuing the theme of large products, students examine the number of new units that can be composed using the standard algorithm for multiplication and see that it is possible to compose up to 8 new units but not 9.
- Action and Expression
- Use the standard algorithm to find products with any number of newly composed units.
- Let’s multiply multi-digit whole numbers using the standard algorithm.
Materials to Copy
- Greatest Product
- Number Cards (0-10)
|Activity 1||15 min|
|Activity 2||20 min|
|Lesson Synthesis||10 min|
Teacher Reflection Questions
- Number Puzzles: Multiplication and Division (4–5), Stage 2: Multi-digit Factors (Addressing)
Print Formatted Materials
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