Book excerpt: Understanding the principles of base ten is essential to understanding numbers and operations. Students will become familiar with the concept of place value through engaging narratives and real-life situations. Students will then be challenged to use place value in the context of algebraic operations, demonstrating the knowledge they’ve gained from reading. Eye-catching visuals help walk readers through the math problems, while age-appropriate language encourages learning. In this book, readers will learn to fluently add and subtract while following Miss Morales’s students as they sell tickets for their talent show. This volume meets CCSS Math Standard 2.NBT.B.5.