Learn on PengiEureka Math, Grade 5Chapter 1: Multiplicative Patterns on the Place Value Chart

Lesson 2: Reason abstractly using place value understanding to relate adjacent base ten units from millions to thousandths.

In this Grade 5 Eureka Math lesson from Chapter 1, students use place value understanding to reason abstractly about how adjacent base ten units relate to each other across the full range from millions to thousandths. Through activities like bundling units, multiplying and dividing by 10, and using a place value chart, students discover that moving one position left makes a unit 10 times larger, while moving one position right makes it one-tenth the size. The lesson builds on concrete place value work introduced in Lesson 1 and strengthens students' fluency with decimal place value concepts.

Section 1

Adjacent Place Value Relationships

Property

The value of a digit becomes 10 times larger for each place it moves to the left and 110\frac{1}{10} as large for each place it moves to the right.

Value1 place leftValue×10 \text{Value} \xrightarrow{\text{1 place left}} \text{Value} \times 10
Value1 place rightValue×110 \text{Value} \xrightarrow{\text{1 place right}} \text{Value} \times \frac{1}{10}

Examples

Section 2

Applying Digit Shift Patterns for 10, 100, 1000

Property

When multiplying by a power of 10, every digit shifts to the left. The number of places shifted is equal to the number of zeros in the power of 10.

When dividing by a power of 10, every digit shifts to the right. The number of places shifted is equal to the number of zeros in the power of 10.

Book overview

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Chapter 1: Multiplicative Patterns on the Place Value Chart

  1. Lesson 1

    Lesson 1: Reason concretely and pictorially using place value understanding to relate adjacent base ten units from millions to thousandths.

  2. Lesson 2Current

    Lesson 2: Reason abstractly using place value understanding to relate adjacent base ten units from millions to thousandths.

  3. Lesson 3

    Lesson 3: Use exponents to name place value units, and explain patterns in the placement of the decimal point.

  4. Lesson 4

    Lesson 4: Use exponents to denote powers of 10 with application to metric conversions.

Lesson overview

Expand to review the lesson summary and core properties.

Expand

Section 1

Adjacent Place Value Relationships

Property

The value of a digit becomes 10 times larger for each place it moves to the left and 110\frac{1}{10} as large for each place it moves to the right.

Value1 place leftValue×10 \text{Value} \xrightarrow{\text{1 place left}} \text{Value} \times 10
Value1 place rightValue×110 \text{Value} \xrightarrow{\text{1 place right}} \text{Value} \times \frac{1}{10}

Examples

Section 2

Applying Digit Shift Patterns for 10, 100, 1000

Property

When multiplying by a power of 10, every digit shifts to the left. The number of places shifted is equal to the number of zeros in the power of 10.

When dividing by a power of 10, every digit shifts to the right. The number of places shifted is equal to the number of zeros in the power of 10.

Book overview

Jump across lessons in the current chapter without opening the full course modal.

Continue this chapter

Chapter 1: Multiplicative Patterns on the Place Value Chart

  1. Lesson 1

    Lesson 1: Reason concretely and pictorially using place value understanding to relate adjacent base ten units from millions to thousandths.

  2. Lesson 2Current

    Lesson 2: Reason abstractly using place value understanding to relate adjacent base ten units from millions to thousandths.

  3. Lesson 3

    Lesson 3: Use exponents to name place value units, and explain patterns in the placement of the decimal point.

  4. Lesson 4

    Lesson 4: Use exponents to denote powers of 10 with application to metric conversions.