3: Basic Operations with Real Numbers Last updated Aug 27, 2021 Save as PDF 2.10: Proficiency Exam 3.1: Objectives Page ID49283 Denny Burzynski & Wade Ellis, Jr.College of Southern Nevada via OpenStax CNX ( \newcommand{\kernel}{\mathrm{null}\,}\) 3.1: Objectives3.2: Signed Numbers3.3: Absolute Value3.4: Addition of Signed Numbers3.5: Subtraction of Signed Numbers3.6: Multiplication and Division of Signed Numbers3.7: Negative Exponents3.8: Scientific Notation3.9: Summary of Key Concepts3.10: Exercise Supplement3.11: Proficiency Exam