1.1 – Real Numbers, Properties, and Order of Operations

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13 Terms

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Natural Numbers

1, 2, 3, 4, …

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Whole Numbers

0, 1, 2, 3, …

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Integers: …

–3, –2, –1, 0, 1, 2, ...

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Rational Numbers

½, –3, 0.75, 4 (fractions, terminating or repeating decimals)

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Irrational Numbers

π, √2, 0.141592... (non-terminating, non-repeating)

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Real Numbers

All rational and irrational numbers

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Commutative

"Commute" = move around

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Associative

Group changes (parentheses move)

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Distributive

“Distributes” multiplication over addition

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Identity

Keeps the number the same

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Inverse

Cancels the number

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PEMDAS

Parentheses, Exponents, Multiplication & Division (left to right) Addition & Subtraction (left to right)

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