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CCLS - Math: 1.NBT.5

Category
Number And Operations In Base Ten
Sub-Category
Use Place Value Understanding And Properties Of Operations To Add And Subtract.
State Standard:
Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
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  • Curriculum Module
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    Grade 1 Mathematics Module 6

    Jul 11, 2016 - Grade 1 Module 6: Place Value, Comparison, Addition and Subtraction to 100 In this final module of the Grade 1 curriculum, students bring together their learning from Module 1 through Module 5 to...