Free Math Worksheets, 7th to 11th Grade | Mathleaks 8th - 9th Grade Worksheet Examples. 1. Writing Linear Equations 2. One-Variable Inequalities 3. Arithmetic Sequences 4. Absolute Value Functions. With Mathleaks worksheets in Algebra 1, a user can print and look up pedagogical solutions to every exercise online via the Mathleaks eCourses.