# Common Core MATH 6 NS 6a Grade 6 The Number System Apply And Extend Previous Understandings Of Numbers To The System Of Rational Numbers

**The Number System: Apply And Extend Previous Understandings Of Numbers To The System Of Rational Numbers.**

Recognize opposite signs of numbers as indicating locations on opposite sides of 0 on the number line; recognize that the opposite of the opposite of a number is the number itself, e.g., -(-3) = 3, and that 0 is its own opposite.

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