Description Top-Level Math Operations 960 approaches number and operations learning—the starting point of math and an essential tool for every area of the subject—with a new philosophy and methodology. Through task-based number and operations problems combined with a variety of situations, processes, and approaches, this workbook not only helps children master computation but also builds higher-level mathematical thinking skills. Top-Level Math Operations 960 will be a great help for children who get bored or tired of simple repetitive computation drills; children who need creative-thinking operations practice beyond the basics; children working on advanced application of curriculum content; children who need to think through math rather than solve problems mechanically; children who want to build a solid foundation rather than rush into excessive advanced learning; children preparing step by step from an early age for gifted education programs, math olympiads, or specialized middle/high schools; and indeed, every child who loves math and wants to excel at it. Table of Contents 081–120 Addition and Subtraction (2) Unit 1: Addition Unit 2: Subtraction Unit 3: Addition and Subtraction Unit 4: Calculations with Three Numbers Answer Key