# Tools of Algebra

- StudyBlue
- Iowa
- West Sioux High School
- Algebra I
- Thompson
- Tools of Algebra

**Created:**2011-08-23

**Last Modified:**2011-08-23

a(b + c) = ab + ac

a(b - c) = ab - ac

a + b = b + a

a • b = b • a

a + (b + c) = (a + b) + c

a• (b • c) = (a • b) • c

PEMDAS.

{1, 2, 3, 4, ...}

Also known as the counting numbers.

{0.1, 2, 3, ...}

{...-3, -2, -1, 0, 1, 2, 3, ...}

1/2, 3/4, 1.5, .333333...

π, √2 etc.

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