Place Value, Rounding, Addition, and Subtraction

Lesson 5

Math

Unit 1

4th Grade

Lesson 5 of 19

Objective


Multiply and divide single units by 10. Recognize that a digit represents 10 times the value of what it represents in the place to its right.

Common Core Standards


Core Standards

  • 4.NBT.A.1 — Recognize that in a multi-digit whole number, a digit in one place represents ten times what it represents in the place to its right. For example, recognize that 700 ÷ 70 = 10 by applying concepts of place value and division.

Foundational Standards

  • 2.NBT.A.1
  • 2.NBT.A.2
  • 2.NBT.A.3

Criteria for Success


  1. Multiply numbers of single units by 10, generalizing the pattern that multiplying by ten results in digits shifting one place to the left (MP.8).
  2. Divide numbers of single units by 10, generalizing the pattern that dividing by ten results in digits shifting one place to the right (MP.8).
  3. Understand that a digit in one place represents ten times what it represents in the place to its right.

Tips for Teachers


Lesson Materials

  • Millions Place Value Chart (3 per student) — Students might need more or less depending on their reliance on this tool.
  • Base ten blocks (4 thousands, 40 hundreds, 20 tens, and 10 ones per student or small group) — You could just use one set for the teacher if materials are limited.
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Anchor Tasks

25-30 minutes


Problem 1

a.   Solve. 

  1. 10 × 1 = _______ 
  2. 10 × 10 = _______
  3. 10 × 100 = _______
  4. 10 × 1,000 = _______
  5. 10 × 10,000 = _______

b.   Explain how you solved Part (a).

Guiding Questions

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Student Response

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Problem 2

a.   Solve. 

  1. 10 $$\times $$ 20 = _______
  2. 10 $$\times $$ 400 = _______
  3. 10 $$\times $$ 50,000 = _______

b.   What do you notice about Part (a)? What do you wonder?

c.   Use your conclusions from Part (b) to find the solutions below.

  1. 30,000 $$\times $$ 10 = _______
  2. _______ $$\times $$ 10 = 6,000
  3. 800,000 $$\div$$ 10 = _______
  4. _______ = 900 $$\div$$ 90

Guiding Questions

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Student Response

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Problem 3

The value of the 7 in 276,945 is how many times as much as the 7 in 17,500?

Guiding Questions

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Student Response

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Problem Set

15-20 minutes


Discussion of Problem Set

  • What are some ways you could model 10 times as many? What are the benefits and drawbacks of each way of modeling?  
  • What did we learn about the value of each unit as it moves from right to left on the place value chart?
  • Compare #1 and #5. What is different about the language in these two problems? Why did one result in a value that was smaller than the original value and the other resulted in a value that was larger? 
  • Look at #2. What numbers did you write? How did you make sure they met the criteria?

Target Task

5-10 minutes


Problem 1

Fill in the blank to make the following equations true.

a.   6,000 = 10 × ______________

b.   10 × 30,000 = ______________

c.   Use pictures, numbers, or words to explain how you got your answer to (b). 

Student Response

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Problem 2

Complete the following statements using your knowledge of place value.

a.   10 times as many as ____________ is 70,000.

b.   10 times as many as 100,000 is ________________.

c.   Use pictures, numbers, or words to explain how you got your answer to (a). 

Student Response

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Additional Practice


The Extra Practice Problems can be used as additional practice for homework, during an intervention block, etc. Daily Word Problems and Fluency Activities are aligned to the content of the unit but not necessarily to the lesson objective, therefore feel free to use them anytime during your school day.

Word Problems and Fluency Activities

Word Problems and Fluency Activities

Help students strengthen their application and fluency skills with daily word problem practice and content-aligned fluency activities.

Next

Multiply and divide multiple units by 10. Apply the property of “ten times greater” in the context of problems.

Lesson 6
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Lesson Map

A7CB09C2-D12F-4F55-80DB-37298FF0A765

Topic A: Place Value of Multi-Digit Whole Numbers

Topic B: Reading, Writing, and Comparing Multi-Digit Whole Numbers

Topic C: Rounding Multi-Digit Whole Numbers

Topic D: Multi-Digit Whole-Number Addition and Subtraction

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