Number Neighbor Sets

This worksheet uses number sets that behave like “neighbors,” all belonging to the same fact family. Students fill in missing numbers in addition and subtraction equations using each trio. The design encourages pattern recognition and close attention to inverse relationships. Learners gain experience determining which number should serve as the whole and which as the parts. These exercises build fluency and deepen number sense. The structured repetition helps students master the relationship between operations.

Curriculum Matched Skills

Mathematics – Addition/Subtraction: Complete related equations

Mathematics – Number & Operations: Strengthen number bonds

Mathematics – Algebraic Thinking: Understand operational inverses

This worksheet is part of our Math Fact Families Worksheets collection.