This book provides targeted practice and assessment for two-digit addition and subtraction concepts. It is designed for educators to evaluate students' understanding of fundamental arithmetic operations involving numbers up to 99. The content focuses on assessing mastery of these skills, likely through a series of problems and exercises.

The book is presented as a practical resource for educators focused on assessing foundational math skills. Its utility lies in providing specific tools for evaluating student comprehension of two-digit addition and subtraction. The approach suggests a structured method for tracking progress in arithmetic operations.