Algebra: rational, irrational, integer, whole, natural, real numbers
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integers
-3, -2, -1, 0, 1, 2, 3 (positive & negative, no decimals)
whole numbers
0, 1, 2, 3 (no decimals & positive)
natural numbers
1, 2, 3 (no decimals, not zero, & positive)
rational numbers
a non decimal (integer), positive & negative, all fractions, all decimals that end or repeat
irrational numbers
positive & negative numbers that can´t be a fraction, decimals never end & repeat