Lesson 10

Ten Times As Much

Lesson Purpose

The purpose of this lesson is to write equations to represent the relationship between the value of digits in multi-digit numbers.

Lesson Narrative

In the previous lesson, students wrote multi-digit numbers in expanded form to highlight the value of each digit. They also described the “ten times” relationship between the value of a digit in one place and the value of the same digit in the place to its right. In this lesson, students use multiplication and division equations to represent this relationship.
  • Engagement

Learning Goals

Teacher Facing

  • Write equations to show that each place in a multi-digit number is ten times the value of the place to its immediate right.

Student Facing

  • Let's write equations to show the relationship between the digits in multi-digit numbers.

Required Preparation

CCSS Standards

Lesson Timeline

Warm-up 10 min
Activity 1 15 min
Activity 2 20 min
Lesson Synthesis 10 min
Cool-down 5 min

Teacher Reflection Questions

How did the student work you selected impact the direction of the discussion? What student work might you pick next time if you teach the lesson again?

Suggested Centers

  • Greatest of Them All (1–5), Stage 3: Multi-digit Numbers (Addressing)
  • Mystery Number (1–4), Stage 4: Fractions with Denominators 5, 8, 10, 12, 100 (Supporting)

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