It is a pdf file containing Review section: LCM of numbers and Simplifying Expressions. Learing section: Conversion of the four opertions in linear equations, and equations with fractions; each with keypoint summary, examples with detailed explaination, and a few follow-up practice questions Extra Practice section: contain 55 practice questions with answer I usually do 1 and 2 with my students in class, and leave 3 as homework for them.