Ep 2. GRE Arithmetic: Integers (Part 2 of 4) | Multiplication, Factors, LCM, GCD

The show GRE Math Review returns for its second episode of season one, diving deeper into GRE Arithmetic with Integers (Part 2 of 4). This week's episode focuses on Multiplication, Factors, LCM, and GCD, helping students to wrap their heads around some of the core mathematical concepts that will be crucial for their success on the GRE exam.

Last week's episode provided an overview of integers and introduced some essential concepts that underpin arithmetic. This episode jumps right in with a review of multiplication and how it functions with integers. The host provides examples of how to multiply integers, including positive, negative, and zero numbers. Students are also shown how to use multiplication to find the opposite of a number, and how this relates to integers.

Next up are factors, which the host explains with the metaphor of building blocks that make up a number. Students learn about prime factorization and how to factor composite numbers using the tree diagram method. The host goes into detail about the different properties of factors, including how to find the number of factors a given number has and how to identify the greatest common factor (GCF) between two numbers.

From there, the show moves on to Least Common Multiple (LCM), which can be a tricky concept but is incredibly important for success on the GRE. The host explains how to find LCM using multiplication and how to use the prime factorization method to simplify the process. Students are also shown how to solve complex problems involving LCM by building on their knowledge of multiplication and factors.

The final topic of the episode is Greatest Common Divisor (GCD), which is particularly relevant to integers and is a common concept tested on the GRE. The host breaks down how to find the GCD of two or more numbers, including how to use the Euclidean algorithm to solve problems more efficiently. Students are also shown how to use the GCD to simplify fractions, another concept that is frequently tested on the GRE.

Throughout the episode, the host provides helpful tips and tricks for students to remember key concepts and avoid common mistakes. The show also incorporates real GRE-style questions to help students practice their skills and cement their understanding of integers. By the end of the episode, students will have a solid grasp of multiplication, factors, LCM, and GCD, and be ready to tackle more complex GRE problems involving integers.

Overall, GRE Math Review season one episode two is a valuable resource for GRE students looking to boost their math skills and succeed on test day. With its engaging host, clear explanations, and real GRE-style questions, this episode will help students gain confidence in their understanding of integers and their ability to tackle arithmetic problems of increasing complexity.