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Pre-Algebra 15 - Least Common Denominators
Sometimes when finding a common denominator we create an unnecessarily large common denominator. This chapter explains how to find the smallest possible common denominator.
Brian McLogan
What is the difference between a perfect and non perfect square number
👉 Learn how to factor a number, variable, and monomial completely. To factor means to write our term as a product of its factors. Therefore we will learn how to break down a number, variable, and monomial into its factors.
Brian McLogan
How to Simplify the Square Root of an Integer
👉 Learn how to find the square root of a number. To find the square root of a number, we identify whether that number which we want to find its square root is a perfect square. This is done by identifying a number which when raised to...
Brian McLogan
Simplify by prime factorization the square root of a prime number
👉 Learn how to find the square root of a number. To find the square root of a number, we identify whether that number which we want to find its square root is a perfect square. This is done by identifying a number which when raised to...
Brian McLogan
Mistakes students make simplifying radicals
There are some pretty common mistakes I see students make time and time again when simplifying radicals. In this video I am going to highlight the top three.
msvgo
Understand and Find Square Roots
It introduces square roots and explains how to find square roots through repeated subtraction and prime factorisation.
msvgo
Applications of HCF & LCM
This nugget teaches to solve mathematical problems using HCF and LCM.
Brian McLogan
What you need to know | Trigonometry
In this video we will cover the key topics you will need to know before starting our chapter on Trigonometry in Pre-calculus. We will start by working through the Pythagorean Theorem and then working through the trigonometric identities...
Brian McLogan
Adding and Subtracting radical expressions
👉 Learn how to add or subtract radicals. A radical is a number or an expression under the root symbol. Radicals can only be added or subtracted if the numbers or expressions under the roots are the same for all terms. To add or subtract...
Professor Dave Explains
Divisibility, Prime Numbers, and Prime Factorization
Understanding prime numbers.
Khan Academy
Square Roots And Real Numbers, Pre-Algebra
Sal works through several problems involving rational and irrational numbers and shows how to find the difference. This video is a good stepping stone for those preparing to take on more challenging algebra work.
Khan Academy
SAT Prep: Test 5 Section 3 Part 5
Problem 15 on the practice SAT (page 657) prompts students to solve a word problem using a number of given constraints. Additional problems involve finding the radius of a circle (given the radius of a smaller circle) and prime...
Khan Academy
Common Divisibility Examples, Factors and Multiples, Pre-Algebra
Equipped with several examples from the attached module and from standardized tests, Sal takes viewers through the process of prime factorization and divisibility. He demonstrates each skill several times with many different numbers,...
Khan Academy
SAT Prep: Test 2 Section 3 Part 4
SAT test-takers get to review median numbers, perimeters, right angles, slopes, and prime factorization in this video, which focuses on problems 13-16. Sal's even pace and methodical problem solving will bolster the confidence of even...
Khan Academy
Prime Factorization, Factors and Multiples, Pre-Algebra
Older elementary students will appreciate how clearly Sal explains how to find the prime factorization of 75. He shows the complete process, taking note of numbers that are and are not primes, and why.
Khan Academy
Finding the Greatest Common Factor of Two Monomials, Algebra I
Sal explains that the most significant common factor of any number is the largest number divisible into both monomials and not necessarily the number with the most significant value. He breaks down two numbers into their prime factors as...
Curated OER
How Do You Simplify Radicals Using the Product Property?
It would be difficult to explain how to write the given radical , the square root of 60, in its simplest form. It's not a perfect square so there are several steps required to break it down and get it to its simplest form. Just watch...
Curated OER
How Do You Find the Prime Factorization of a Number Using a Tree?
A factor tree? What's a factor tree? A tree of factors? A factor tree is a method use to do the prime factorization of an integer. It's not complicated. Watch the teacher as she explains the steps and shows how to write the answer as a...
Curated OER
How Do You Find the Greatest Common Factor If There are No Common Factors?
Use prime factorization to find the greatest common factor of three given values. Okay. But what if there doesn't seem to be any integer that is common in all three given values? Well, then, the greatest common factor must be 1. Not sure...
Curated OER
How Do You Find the Greatest Common Factor of Two Numbers Using Prime Factorization?
Here's a quick review on how to use a prime factor tree to find the greatest common factor of two numbers. This is one of the simplest ways to find the greatest common factor. So watch this video to get a refresher on how to do prime...
Curated OER
How Do You Find the Greatest Common Factor of Three Numbers?
Use prime factorization to find the greatest common factor of three given values. What are the factors that all three given numbers have in common? Identify them, and then multiply together to get the greatest common factor. Just like...
Curated OER
How Do You Find the Greatest Common Factor of Monomials?
Use prime factorization to find the greatest common factor of four given values. What are the factors that all four given values have in common? Identify them, and then multiply together to get the greatest common factor. Just like that....