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N.RN.B.3
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Common Core · High School Number and Quantity · The Real Number System
Standard N.RN.B.3
Free lessons and printable worksheets aligned to Common Core math standard N.RN.B.3.
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Lessons for N.RN.B.3
Closure
A set is closed under an operation when the answer always lands back inside the set.
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Closure worksheet (PDF)
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