Lesson Plan: Adding Mixed Numbers

In this ninth lesson of the Adding and Subtracting Fractions Unit, students will learn how to add mixed numbers. This lesson builds on their understanding of mixed numbers and fraction addition, providing strategies for combining whole numbers and fractions efficiently.

Students will:

• Understand the structure of mixed numbers (whole numbers and fractions)
• Learn how to add mixed numbers with like and unlike denominators
• Use the Least Common Denominator (LCD) to rewrite fractions before adding
• Convert between mixed numbers and improper fractions when necessary
• Practice simplifying results and renaming improper fractions as mixed numbers
• Apply their knowledge to solve real-world problems involving mixed number addition

Designed for grades 3-5, this lesson aligns with Common Core standards and reinforces students’ ability to perform fraction operations with mixed numbers. Mastering this skill prepares students for subtracting mixed numbers in the next lesson.

This is the ninth lesson in a ten-part unit on adding and subtracting fractions. The final lesson will focus on subtracting mixed numbers.

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