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 theyve gained from reading. Eye-catching visuals help walk readers through the math problems, while age-appropriate language encourages learning. Readers learn about what happens in a karate class as they practice adding up to four two-digit numbers. This volume meets CCSS Math Standard 2.NBT.B.6.