1: Foundations Last updated Jun 23, 2019 Save as PDF Licensing 1.1: Prelude to Foundations of Algebra Page ID18919 OpenStaxOpenStax ( \newcommand{\kernel}{\mathrm{null}\,}\) 1.1: Prelude to Foundations of Algebra1.2: Introduction to Whole Numbers1.3: Use the Language of Algebra1.4: Add and Subtract Integers1.5: Multiply and Divide Integers1.6: Visualize Fractions1.7: Add and Subtract Fractions1.8: DecimalsDecimals are another way of writing fractions whose denominators are powers of 10.1.9: The Real Numbers1.10: Properties of Real Numbers1.11: Systems of Measurement