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My Math Chapter 6: Multiply and Divide Decimals

Revised and Updated 01-06-19

​In this chapter, students will learn how to estimate decimal products and quotients and solve multiplication and division problems involving decimals.

Chapter 6 Objectives:
  • Estimate products and quotients
  • Multiply decimal numbers
  • Divide with decimal dividends and 1-digit or 2-digit whole number divisors
  • Multiply and divide decimals by powers of 10
  • Use properties of multiplication (commutative, distributive, associative, identity, zero) to solve problems.

Chapter 6 Lessons:
  • Lesson 1: Estimate Products of Whole Numbers and Decimals/My Math Lesson 1 Answer Key
  • Lesson 2: Hands On: Using Models to Multiply/My Math Lesson 2 Answer Key
  • Lesson 3: Multiply Decimals by Whole Numbers/My Math Lesson 3 Answer Key
  • Lesson 4: Hands On: Use Models to Multiply Decimals/My Math Lesson 4 Answer Key
  • Lesson 5: Multiply Decimals/My Math Lesson 5 Answer Key
  • Lesson 6: Multiply Decimals by Powers of Ten/MyMath Lesson 6 Answer Key
  • Lesson 7: Problem-Solving Investigation: Look for Patterns/My Math Lesson 7 Answer Key
  • Lesson 8: Multiplication Properties/My Math Lesson 8 Answer Key
  • Lesson 9: Estimate Quotients/My Math Lesson 9 Answer Key
  • Lesson 10: Hands On: Divide Decimals/My Math Lesson 10 Answer Key
  • Lesson 11: Divide Decimals by Whole Numbers/My Math Lesson 11 Answer Key
  • Lesson 12: Hands On: Use Models to Divide Decimals/My Math Lesson 12 Answer Key
  • Lesson 13: Divide Decimals/My Math Lesson 13 Answer Key
  • Lesson 14: Divide Decimals by Powers of Ten/My Math Lesson 14 Answer Key
  • Chapter 6 Review

Login to the McGraw-Hill My Math web site to access more information about this chapter, including visual vocabulary cards, an interactive journal, homework pages, video tutorials, and much more. Please contact Mr. Bowen if you do not know your username/password.

Chapter 6 Downloads (assignments and handouts)
  • 1st Semester Review  + Answers QR Codes + Video Explanations
  • Chapter 6 Study Guide + Answers

PowerPoint Presentations (not by Mr. Bowen unless noted)
  • Multiplying Decimals PowerPoint
  • Rounding and Multiplying Decimals (with models) PowerPoint
  • Multiplying Decimals PowerPoint
  • Dividing Decimals PowerPoint
  • Multiply/Divide by Powers of 10 PowerPoint
  • Properties of Multiplication PowerPoint

Mr. Bowen's Video Tutorials​
  • Mr. Bowen's Math YouTube Channel (all videos)
  • 1st Semester Review
  • Extended Multiplication Facts (review from chapter 2)
  • Extended Division Facts (review from chapter 3)
  • Estimate Products (lesson 1)
  • Multiply Decimals (lesson 5)
  • Multiply by Powers of 10 (lesson 6)
  • Multiplication Properties - Commutative and Associative (lesson 8)
  • Distributive Property (lesson 8 - coming soon!)
  • Estimate Quotients (lesson 9)
  • Divide Decimals (lesson 11)
  • Divide by Powers of 10 (lesson 14)

Games and Interactives

I am constantly updating this page to add new content and check existing links. If you find a broken link, please email me the name of the link so I can fix it. Thank you.

Interactive Tutorials
  • GeoGebra Powers of 10 
  • ​GeoGebra Multiply/Divide by Powers of 10 
  • ​GeoGebra Area Model for Multiplying Decimals 
  • GeoGebra Partial Products (Distributive Property) 
  • GeoGebra Partial Products v2 (Distributive Property) 
  • GeoGebra Distributive Property Area Model
  • GeoGebra Lattice Multiplication 
  • Phet Area Model for Multiplication
  • Phet Area Model for Multiplication of Decimals

Games
  • Math Man Estimating Products
  • Sum Sense Division
  • Envision Division
  • Transum Divisibility
  • Digivide

Skills Practice

More practice quizzes categorized by topic can be found on the Math Skills Practice page.

Multiplication
  • GeoGebra Traditional Multiplication
  • Math Frog Traditional Multiplication Practice 2x1
  • Math Frog Traditional Multiplication Practice 2x2
  • ​Math Frog Traditional Multiplication Practice 3x3
  • ThatQuiz Traditional Multiplication 1
  • ThatQuiz Traditional Multiplication 2
  • ThatQuiz Traditional Multiplication 3
  • ThatQuiz Decimals Multiplication
  • Mr. Nussbaum's Decimals Workshop (add, subtract, multiply, divide)

Division
  • GeoGebra Long Division​
  • Divisibility Rules
  • ThatQuiz Long Division 1
  • ThatQuiz Long Division 2
  • Long Division Step by Step
  • Long Division Step by Step 2
  • Long Division With Remainders Step by Step​
  • Math Frog Dividerama (level 1)
  • Math Frog Dividerama (level 2)
  • Math Frog Dividerama (level 3)

Properties of Multiplication
  • Distributive Property - Simplifying Expressions (GeoGebra)

Video Tutorials

Video tutorials from Khan Academy, Mashup Math, Everyday Math, and LearnZillion. Most video clips are between 5 and 10 minutes in length. Tutorial videos for each My Math lesson can be found at the McGraw-Hill My Math web site. Mr. Bowen's tutorial videos can be found on his YouTube channel.

Multiplication
  • Multiplication of Whole Numbers (video set from LearnZillion)
  • Multiplication and Division with Decimals (video set from LearnZillion)
  • Ways to Represent Multiplication (Kahn)
  • Multiplication Area Model 1 (Kahn)
  • Multiplication Area Model 2 (Kahn)
  • Lattice Multiplication (Kahn)
  • Why Lattice Multiplication Works (Kahn)
  • Multiplying by Multiples of 10 (Kahn)
  • Partial Products (from Everyday Math)
  • Partial Products Decimals (from Everyday Math)
  • Traditional Multiplication (from Everyday Math)
  • Traditional Multiplication 2x2 Digit (from Everyday Math)
  • Multiplying 2-Digit by 1-Digit (Kahn)
  • Multiplying 2-Digit by 1-Digit With Regrouping (Kahn)
  • Multiplying 3-Digit by 1-Digit (Kahn)
  • Multiplying 3-Digit by 1-Digit with Regrouping (Kahn)
  • Multiplying 2-Digit by 2-Digit (Kahn)
  • Multiplying 2-Digit by 2-Digit (Kahn)
  • Multiplying Multi-Digit Numbers (Kahn)
  • Introduction to Decimal Multiplication (Kahn)
  • Multiplying Decimals Word Problem (Kahn)
  • Multiplying Decimals - Place Value Connection (Kahn)
  • Complex Decimal Multiplication (Kahn)
  • Estimating Products (Kahn)

Division
  • Division of Whole Numbers (video set from LearnZillion)
  • Expressing Division in Different Ways (Kahn)
  • Partial Quotients (from Everyday Math)
  • Partial Quotients 2-Digit Divisors (from Everyday Math)
  • Partial Quotients Decimals (from Everyday Math)
  • Partial Quotients 1 (Kahn)
  • Partial Quotients 2 (Kahn)
  • Introduction to  Long Division (Kahn)
  • Long Division Example (Kahn)
  • Division and Place Value (Kahn)
  • Area Models of Division (Kahn)
  • Introduction to Remainders (Kahn)
  • Remainders Example 1 (Kahn)
  • Remainders Example 2 (Kahn)
  • Multiplication and Division Word Problem 1 (Kahn)
  • Multiplication and Division Word Problem 2 (Kahn)
  • Multiplication and Division Word Problem 3 (Kahn)
  • Dividing by Two Digits 1 (Kahn)
  • Dividing by Two Digits 2 (Kahn)
  • Dividing to Get Decimal Answer (Kahn)
  • Dividing to Get Decimal Answer 2 (Kahn)
  • Dividing a Whole Number by a Decimal (Kahn)
  • Dividing by Multi-Digit Decimals (Kahn)
  • Dividing Decimals 2 (Kahn - advanced)
  • Dividing by Powers of 10 (Kahn)
  • Finding Unit Rates (Kahn)
  • Finding Unit Prices (Kahn)

Properties
  • Commutative Property (Mashup Math)
  • Associative Property (Mashup Math)
  • Distributive Property (Mashup Math)
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