This volume serves as a comprehensive answer key and instructional support tool for students and educators engaging with the second level of the Mathematics for Schools curriculum. Harold Roy Fletcher, a recognized figure in mid-20th-century pedagogical mathematics, designed this series to provide a structured, incremental approach to arithmetic and foundational geometry. The text functions as a verification mechanism, allowing learners to assess their progress through the exercises presented in the tenth book of the second level.

Educators and historians of mathematics education frequently cite the Fletcher series as a foundational example of post-war instructional design. The text is noted for its clarity and systematic approach to building mathematical literacy in primary and secondary school settings.