Description Top-Level Calculation 960 approaches number and calculation learning—the starting point of math and an essential tool for every area of the subject—with a new philosophy and methodology. Through task-solving math and calculation problems that combine diverse situations, processes, and approaches, this workbook not only builds solid calculation skills but also nurtures higher-level mathematical thinking. Top-Level Calculation 960 will be a great support for children who get bored or tired of simple, repetitive calculation drills; children who need creative-thinking calculation practice beyond basic arithmetic; children working on advanced application of school curriculum; children who need to think through math rather than solve problems mechanically; children who want to build strong fundamentals rather than rush into excessive advanced study; children preparing step by step from an early age for gifted education programs, olympiads, or specialized middle/high schools; and indeed, every child who loves math and wants to excel at it. Table of Contents 001~040 Issue 1: Numbers up to 9 Issue 2: Numbers up to 5 Issue 3: Numbers up to 9 Issue 4: Various Numbers Numbers and Problem Solving Answer Key