7th Grade Common Core: 7.NS.1a

Common Core Identifier: 7.NS.1a / Grade: 7

Curriculum: The Number System: Apply And Extend Previous Understandings Of Operations With Fractions To Add, Subtract, Multiply, And Divide Rational Numbers.

Detail: Describe situations in which opposite quantities combine to make 0. For example, a hydrogen atom has 0 charge because its two constituents are oppositely charged.