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Mathematics > Grade 7 > The Number System
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Mathematics | Grade : 7

Domain - The Number System

Cluster - Apply and extend previous understandings of operations with fractions to add, subtract, multiply, and divide rational numbers.

[7.NS.A.1.a] - Describe situations in which opposite quantities combine to make zero. For example: A hydrogen atom has zero charge because its two constituents are oppositely charged; If you open a new bank account with a deposit of $30 and then withdraw $30, you are left with a $0 balance.

Resources:

    Predecessor Standards:

    • 6.NS.C.5
      Understand that positive and negative numbers are used together to describe quantities having opposite directions or values (e.g., temperature above/below zero, elevation above/below sea level, credits/debits, and positive/negative electric charge). Use positive and negative numbers (whole numbers, fractions, and decimals) to represent quantities in real-world contexts, explaining the meaning of zero in each situation.
    • 6.NS.C.6.a
      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.

    Successor Standards:

    No Successor Standards found.

    Same Level Standards:

    • 7.PS.2.3
      Analyze data to describe the effect of distance and magnitude of electric charge on the strength of electric forces. Clarification Statement: Includes both attractive and repulsive forces. State Assessment Boundaries: State assessment will be limited to proportional reasoning. Calculations using Coulomb’s law or interactions of sub-atomic particles are not expected in state assessment.