CCSS.Math.Content.1.OA.B.4 - Understand subtraction as an unknown-addend problem. For example, subtract 10 - 8 by finding the number that makes 10 when added to 8.
Authors: National Governors Association Center for Best Practices, Council of Chief State School Officers
Title: CCSS.Math.Content.1.OA.B.4 Understand Subtraction As An Unknown-addend Problem. For Example, Subtract... Operations and Algebraic Thinking - 1st Grade Mathematics Common Core State Standards
Publisher: National Governors Association Center for Best Practices, Council of Chief State School Officers, Washington D.C.
Copyright Date: 2010
(Page last edited 12/03/2015)
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