Foundations of Numbers and Operations A closer look at number systems, including integers, rational numbers, and real numbers. Chapters Problem Solving 1.1 - Problem Solving and Sums 1.2 - Exploration with Patterns Logic and Set Theory 2.1 - Reasoning and Logic 2.2 - Describing Sets 2.3 - Other Set Operations Numeration Systems and Whole Number Operations 3.1 - Numeration Systems 3.2 - Addition of Whole Numbers 3.3 - Subtraction of Whole Numbers 3.4 - Multiplication of Whole Numbers 3.5 - Division of Whole Numbers Number Theory 4.1 - Divisibility 4.2 - Prime and Composite Numbers 4.3 - GCD and LCM Integers 5.1 - Addition and Subtraction of Integers 5.2 - Multiplication and Division of Integers Rational Numbers 6.1 - The Set of Rational Numbers 6.2 - Addition and Subtraction with Rational Numbers 6.3 - Multiplication and Division with Rational Numbers 6.4 - Proportional Reasoning Decimals, Percents, and Real Numbers 7.1 - Terminating Decimals 7.2 - Operations on Decimals 7.3 - Repeating Decimals 7.4 - Percents 7.5 - Real Numbers Algebraic Thinking 8.1 - Variables 8.2 - Equals Relation and Equations 8.3 - Functions