Teach the concept of fact family using these hands-on printable materials that we have collected for you! A handful of fact families worksheets are available to help you evaluate your students’ skill in working on fact family problems. A fact family is made when there are 3 numbers that are related. This concept is just like how people in a family are related –these 3 numbers make a set of related Math facts. Get these fact family worksheets and help your children understand the relationship of a number.