7th Grade · The Number System
Zero Pair
7.NS.A.1a
Definition
A set of two numbers (one positive, one negative) that sum to zero. Used in chip models to simplify integer addition.
Teach it
Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.
Examples
- (+5) + (−5) = 0 — five zero pairs cancel out.
- (+7) + (−4): remove 4 zero pairs, leaving +3.
Key rule
Each zero pair cancels; count what is left.
Memory hook
One positive + one negative = zero.