Ch 1 Foundations of Algebra
This chapter is a review chapter that is intended to prepare students for Algebra. It's basically a refresher of 6th and 7th grade skills necessary for success in Algebra I.
1.7 Simplifying Expressions
This covers the basic idea of combining like terms.
Order of Operations
Here is a review of the Order of Operations
This is a review of various operations with integers. You must've mastered these in order to successfully handle the complicated problems of Algebra I.