OpenStax Prealgebra – Chapter 1 Whole Numbers (1.1 Introduction) | Questions & Answers Study Guide 2026/2027

OpenStax Prealgebra Chapter 1: Whole Numbers (1.1 Introduction to Whole Numbers) resource is designed to help students understand the basics of number classification and place value. It includes practice questions on identifying counting numbers and whole numbers, as well as interpreting numbers using base-10 (place value) models. This guide is ideal for students building foundational math skills who want structured practice to improve accuracy and confidence in prealgebra concepts. Prealgebra 1: Whole Numbers 1.1 Introduction to Whole Numbers Practice Makes Perfect Identify Counting Numbers and Whole Numbers In the following exercises, determine which of the following numbers are (a) counting numbers (b) whole numbers 1. 2 0, , 5, 8.1, 125 3 Answer: (a) 5, 125 (b) 0, 5, 125 2. 7 0, , 3, 20.5, 300 10 Answer: (a) 3, 300 (b) 0, 3, 300 3. 4 0, , 3.9, 50, 221 9 Answer: (a) 50, 221 (b) 0, 50, 221 4. 3 0, , 10, 303, 422.6 5 Answer: (a) 10, 303 (b) 0, 10, 303 Model Whole Numbers In the following exercises, use place value notation to find the value of the number modeled by the base-10 blocks.