When Do I Multiply?

Welcome to the Multiplication Page.

The materials on this page explain the following types of multiplication opportunities:

• Combining Equal Groups
• Counting Items in Rectangular Arrays
• Finding Areas of Rectangles
• Mixing and Matching
• Using Unit Rates
• Comparing with Multiplication

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Suggestions:

1. Print the Workspace and Notes and use it as you watch the Lesson.
   
2. Print the Overview and use it to complete the Practice Problems.
3. Solve the Application Problems and view the Student Work to learn how other students approached the same problems. 
4. Review the Additional Links to other multiplication resources to continue learning.

Companion Tools

• When Do I Multiply?  Work Space and Notes
• When Do I Multiply? Overview  

Lesson:  When Do I Multiply?

Additional Links:

• Multiplication with Thinking Blocks
• Instruction to Use Thinking Blocks for Multiplication
• Thinking Blocks Tool
• Multiplication Properties of 10, 100, 1000
• Review of Skip Counting
• Practice with Skip Counting
• Finding Area with Multiplication*
• Multiplication Expressions to Represent Diagrams*
  
• Multiplication with Equal Groups*
• Multiplication as an Array*
• Solving Multiplication with Skip Counting*
• Matching Multiplication Equations to Real World Problems*
• Relating Areas to Arrays*
• Comparing with Multiplication*

Practice Problems:  When Do I Multiply?

Application Problems:

• Is It Fair?
• CEO vs. Average Worker Pay
• Truth in Advertising and Student Solution
• The Cost of Smoking and Student Solution
• Which Job Pays Best? and Student Hint