Khan Academy
Khan Academy: Solve Systems of Linear Equations With Elimination (Advanced)
In this exercise, students practice solving systems of linear equations with elimination (advanced). Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Solving Linear Systems by Substitution
Twenty-seven problems present a variety of practice solving linear systems by substitution. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View...
CK-12 Foundation
Ck 12: Algebra: Graphs of Absolute Value Equations
[Free Registration/Login may be required to access all resource tools.] This lesson covers graphing absolute value functions. Students examine guided notes, review guided practice, watch instructional videos and attempt practice problems.
AAA Math
Aaa Math: Adding Two Digit Numbers Mentally
Read these two strategies for adding two-digit numbers in your head. Then try out the one you like better by playing the game. Running totals of your correct and incorrect answers as well as a percent score of your correct answers will...
Rice University
Rice University: Cynthia Lanius: Algebra Fun With Calendars
A fun algebraic problem involving a calendar. Discussion, solution, and follow-up problem are included.
Khan Academy
Khan Academy: Simplifying Rational Expressions
Have you learned the basics of rational expression simplification? Great! Now gain more experience with some trickier examples.