Number & Operations for Teachers
Copyright David & Cynthia Thomas, 2009
Chapter/Section
Chapter Four: Fraction Addition & Subtraction
4.2 Properties of Fraction Operations
Objective
Understand the inverse relationship between fraction addition and subtraction.
Overview
When considering fact families for fraction operations, one must first recognize that, while addition of fractions is commutative, subtraction is not.
Fractions
Addition
closed
commutative
Subtraction
not commutative
Table 4.1: Properties of Fraction Operations – Addition & Subtraction
Readings
Properties of Fraction Operations
Homework
Exercises
Links
N/A
