
Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion 
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May 11th, 2017, 12:18 PM  #1 
Member Joined: Aug 2016 From: afghanistan Posts: 55 Thanks: 1  How many "tools" do you need when learning basic maths ?
I mean you need to know about , Composite factors Prime factors Greatest common factor Least common multiple Is that all there is to know when dealing with basic math ? I get confused when it goes by a lot more different names like , HCF GCD LCD is it all the same ? 
May 11th, 2017, 02:41 PM  #2 
Global Moderator Joined: Dec 2006 Posts: 16,950 Thanks: 1256 
There is a lot more to basic mathematics  too much to list here, but there are plenty of textbooks and online resources available. HCF stands for Highest Common Factor, whereas GCD stands for Greatest Common Divisor, but they refer to the same thing. The HCF (or GCD) of 24, 60 and 96 is 12. LCD stands for Lowest Common Denominator. You might also come across LCM (Least Common Multiple) as an alternative. The LCD (or LCM) of 24, 60 and 90 is 360. 
May 11th, 2017, 11:23 PM  #3 
Member Joined: Aug 2016 From: afghanistan Posts: 55 Thanks: 1 
Thanks for the reply , When solving or simplifying Arithmetic fractions Algebraic expressions Algebraic fractions Algebraic equations Are these the most used terms ? Factor Composite factors Prime factors Greatest common factor Least common multiple ? 
May 12th, 2017, 06:11 AM  #4 
Global Moderator Joined: Dec 2006 Posts: 16,950 Thanks: 1256 
That probably depends on local conventions. I've never come across "composite factors" and prefer the term "divisor" when I intend it to mean a factor that's a positive integer. Thus, I could assert that a composite positive integer is the product of positive integer powers of its prime divisors.

May 12th, 2017, 08:35 AM  #5 
Member Joined: Aug 2016 From: afghanistan Posts: 55 Thanks: 1 
Thanks , The best thing would to be to learn from a book starting with whole numbers , fractions and algebra


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