Add and Subtract Using Fact Families

The video tutorial introduces the concept of fact families, demonstrating how addition and subtraction are related. It reviews the commutative property of addition and addresses common misconceptions about subtraction. Through various examples, the tutorial explains how knowing one fact in a family can help deduce others, reinforcing the interconnectedness of these operations. The lesson concludes with advanced examples and a summary of the key points covered.

How can knowing one fact in a fact family help you with others?

If you know that 6 plus 3 equals 9, what other facts can you derive from this?