Lesson 9
Same Digit, Different Value
Lesson Purpose
Lesson Narrative
This lesson shifts the focus from reading and writing numbers to describing the multiplicative relationship between place values in a multidigit number. In previous lessons, students used baseten blocks to represent large numbers, and wrote numbers in expanded form. In this lesson, they use their developing understanding of the value of a digit to begin to articulate that a digit in one place is ten times the value as the same digit in a place to its right.
The syntheses in this lesson help students connect the language of “ten times the value” to equations to help them represent this concept.
 Representation
 MLR2
Learning Goals
Teacher Facing
 Describe that the value of a digit in one place represents ten times what it represents in the place to its right.
Student Facing
 Let’s describe the relationship between the digits in multidigit numbers.
Required Materials
Materials to Copy
 Card Sort: Large Numbers (4 to 6 digits)
Required Preparation
Activity 1:
 Create a set of cards from the blackline master for each group of 2 students.
Lesson Timeline
Warmup  10 min 
Activity 1  20 min 
Activity 2  15 min 
Lesson Synthesis  10 min 
Cooldown  5 min 
Suggested Centers
 Greatest of Them All (1–5), Stage 3: Multidigit Numbers (Addressing)
 Mystery Number (1–4), Stage 4: Fractions with Denominators 5, 8, 10, 12, 100 (Supporting)
Print Formatted Materials
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Additional Resources
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