Description Sangwigwon Yeonsan 960 approaches number and computation learning—the starting point of math and an essential tool for every area of mathematics—with a new philosophy and methodology. Through task-solving computation problems combined with diverse situations, processes, and methods, it not only helps children master computation skills but also builds advanced mathematical thinking abilities. Sangwigwon Yeonsan 960 will be a great help for children who: get bored or tired of simple, repetitive computation drills; need creative-thinking computation practice beyond the basics; want to deepen and apply their understanding of school curriculum; need to think through math rather than solve problems mechanically; want to build a solid foundation rather than rush into excessive advanced learning; are steadily preparing from an early grade for gifted education programs, olympiads, or specialized schools; and simply love math and want to excel at it. [Book Composition] 6 books for Level P, 4 books each for Levels A–D, 22 books in total C1: 721–780 – Addition and subtraction of three- and four-digit numbers C2: 781–840 – Multiplication C3: 841–900 – Division C4: 901–960 – Fractions and decimals [Recommended Grade] An essential critical-thinking computation workbook for top-level elementary 3rd grade students Table of Contents C3 841–900 Division Issue 1: (Two-digit number) ÷ (One-digit number) with a one-digit quotient (1) Issue 2: (Two-digit number) ÷ (One-digit number) with a one-digit quotient (2) Issue 3: (Two-digit number) ÷ (One-digit number) with a two-digit quotient (1) Issue 4: (Two-digit number) ÷ (One-digit number) with a two-digit quotient (2) Answer Key