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Arithmetic
 
 
Arithmetic Concepts (1 CD) - $4.99
Average, Percent, Ratio and Proportion, Radians, Factorial, Metric units
Simple and Compound Interest: Principal, Rate, Time, Present Value, Future Value
Number Theory: Definitions of Real Numbers, Integers, Natural Numbers, Rational and Irrational Numbers, Prime Numbers, Composite Numbers, Greatest Common Divisors (GCD), Least Common Multiple (LCM), Absolute Value, Commutative Property, Associative Property, Distributive Property.
Set Concepts: Elements, Equivalent Sets, Null Sets, Subsets, Definitions of Intersection, Union, Number of Elements in a Set, Complement, Set Difference, And and Or, Basic Set Identities.
Series: An understanding of Arithmetic, Geometric, and Harmonic Series. Terms and Sequence. The Common Difference, The Common Ratio, The nth Term, Arithmetic Mean, Geometric Mean, Harmonic Mean, Sum of an Arithmetic and Geometric Progression....more.

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Series
A list of numbers governed by a special rule is called a sequence. The numbers in the list are called terms. If the terms in the sequence are considered a sum, then we have a series

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Simple and Compound Interest
A sum of money P, the principal, is invested at interest rate R percent over a period of time T. If the simple interest gained is I, then I = PRT.

Compound Interest is calculated periodically over a specific time. Where A is the amount of money grown in t years at interest rate r from a principal P, if n is the number of times per year the interest is compounded, then the compounded future value is given as A = P(1 + r/n)nt.
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