There are 8 separate practice worksheets for simplifying powers and exponents. The worksheets vary in degree of difficulty so they are great for middle school students as well as Algebra I students. Some worksheets have problems that only result in positive exponents, while others have a mix of positive and negative. There is also a matching activity included. Students match an expression with it's simplified version using negative exponents and then the completely simplified version without negative exponents. Also included is a simpler, modified version of this activity for your struggling learners. Great for homework, a substitute teacher, or group work.