+A **signed number** carries a positive (+) or negative (-) sign, expressing both its [Magnitude](/wiki/magnitude) and its direction relative to zero. These foundational numbers indicate whether a value lies above or below a reference point, crucially forming the set of [Integers](/wiki/integer).
+## See also
+- [Negative Number](/wiki/negative_number)
+- [Positive Number](/wiki/positive_number)
+- [Number Line](/wiki/number_line)
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