This resource is a workbook containing 17 worksheets, 3 quizzes (2 versions of each), and a unit test (2 versions). These worksheets give students practice on 8 different Number Theory lessons. This resource is intended to be used in a pre-algebra or middle school math classroom, and is also perfect for home school students who need extra practice. The worksheet titles are:1.1 Prime, composite numbers, divisibility rules 1.2 Prime factorization 1.3 Introduction to Exponents 1.4 Scientific n