Number Types

Natural numbers - whole numbers e.g. 1, 666, -5

Prime numbers - numbers who have only 2 factors (1 and itself) e.g. 17, 3

Square number - product of an integer with itself e.g. 1, 4, 9, 16

Rational numbers - numbers that can be written as a fraction e.g.17, -3, 12.4, 15.333333

Irrational numbers -  numbers that aren't predictable and cannot be expressed as a fraction e.g. Pi, e

Pi - the ratio of a circles circumference to its diameter, 3.14159, irrational number

Euler's number(e) - is the limit of (1+1/n)n as n approaches infinity, an expression used in compound interest, 2.71828, interest, calculus

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BOPS - Brackets, Operators (powers), Products (multiply, divide), Sums (add, divide) 

Binary numbers - numbers expressed in the base 2 number system which only uses two symbols 1(on) and 0(off)

Hexadecimal numbers - numbers in the base 16 number system that uses 16 different symbols (1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f)

Binary to hexadecimal - the hexadecimal number 1B7 can be converted in to decimal. Multiply all the digits by 16. (1B7)16 = (1x16^2) = (1x16^2) + (11x16^1) + (7x16^0) = (439)10

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Roman Numerals - 



Egyptian number -  

Mayan Numbers - 






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