The number system

7.NS.A.1

Add and subtract rational numbers, extending previous understandings of addition and subtraction.

Practice for this standard

• Integers and negative numbers

  Number lines below zero, absolute value, and the sign rules for all four operations.

  • beginner worksheet
  • intermediate worksheet
  • advanced worksheet

Official wording and the full standard: CCSS.MATH.CONTENT.7.NS.A.1

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