Hua Luogeng Cup Youth Mathematics Invitational Competition Training Guide

Author: Yang Guanghui
Publisher:
Publish Date: 2000-05-01
Features: "Training Guide for the Hua Luogeng Cup Junior Mathematics Invitational" and "Training Question Bank for the Hua Luogeng Cup Mathematics Invitational." Among them, "Training Guide for the Hua Luogeng Cup Junior Mathematics Invitational" progresses from simple to complex, with clear and detailed explanations. Each chapter is followed by reinforcement training questions. At the end, it meticulously introduces two sets of simulated competition questions targeting the "Hua Cup" competition format, including preliminary, semi-final, final, oral, and rapid-response rounds, to provide warm-up training for competition participants. The provided answers are easy to grasp yet creative, making it a highly practical mathematics training question collection.
Examples like the one above are called closed-type number arrays. The key to constructing closed-type number arrays lies in determining the numbers at each vertex and the sum of numbers on each side. The method involves establishing equations based on the "overlap" principle. Generally, one must discuss from the smallest to the largest value sequentially, which requires reasoning and calculation, as well as trial and selection.