Here is a fact family workbook that helps reinforce the relationship between addition and subtraction.
There are two pages for students...one side has three numbers that make up a fact family and the adjacent page has one of the same numbers, but with two blanks. Students have to create their own fact family.
I use this booklet in my math journals each year, but you can use it independent of a journal. It could be used in a math center.
Make sure to copy it front back and have your copier staple it as a booklet!
Fonts: Kevin and Amanda