Grades 7-8 Video Solutions 2015-Levels 7&8 Video Solutions 2015 part3

Video Transcription

Video Summary

The video transcript involves solving several mathematical problems involving numbers, geometry, and logic puzzles. Each problem requires specific mathematical techniques and logical reasoning to arrive at the correct solution. Problem 21 involves adjacent regions and the sum of numbers, with the solution revealing that the center must contain the number 6. Problem 22 uses percentages of weights to determine that the group contains 6 kangaroos. In Problem 23, angles and side lengths in a trapezoid are calculated, leading to a solution of 30 degrees for a specified angle. Problem 24 demands analyzing sums to discern the largest integer on five cards, concluding that it is 48. Problem 25 asks for calculating the largest remainder, solved as 671. Problem 26 involves determining triangle areas within a square, ending with the longest diagonal segment. Distinct configurations determine the answer for Problem 27, while Problem 28's permutation calculations lead to discovering the value of a missing distance, deduced as 14. Finally, Problem 29 examines possible squares that can be formed in a grid, while Problem 30 requires arranging numbers to satisfy arithmetic operations, resulting in the middle number being 6.

Keywords

mathematical problems

geometry

logic puzzles

trapezoid angles

triangle areas

permutation calculations