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Pre Algebra Concepts
Prime numbers and prime factoring
Common factor and greatest common factor
Simplify fraction and equivalent fractions
Complex fractions
Least common multiple and denominator
Compare fractions
Fraction and mixed number
Add fractions
Add mixed numbers
Subtract fractions
Subtract mixed numbers
Multiply fractions
Divide fraction or mixed number
Other
To Lean pre-algebra
In pre-algebra section, there are basic rules for arithmetic operation. For example, what is the common factors? What is the greatest common factor (GCF)? What is the simplest
form of a fraction? What is the least common denominator (LCD)? How to comparing fractions with common denominators? How to comparing fractions with different denominators?
How to compare fractions with the same numerators and different denominators? How to change a mixed number to a fraction? How to add two fractions with the same denominator?
How to add two fractions with different denominators? How to add two mixed numbers with the same denominator? How to add two mixed numbers with different denominators? How to
subtract two fractions with the same denominator? How to subtract two fractions with different denominators? How to subtract two mixed numbers with the same denominator? How to
subtract two mixed numbers with different denominators? How to multiply two fractions? How to divide two fractions? Why do we need to use a fraction? Look the example, on hour is
60 minutes, then 20 minutes is how many hours? The 20 minutes is 20/60 = 1/3 hours which is a fraction. So, a part of whole can be expressed as a fraction. There are a lot of
operation rules in Pre-algebra, it is the foundation of the algebra. The more you practice, the more you will understand.