Math Lessons | Addition and Subtraction within 1,000 for 3-Year-Olds

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    • Key Ideas and Details/ Craft and Structure
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    • Subtraction Story Problems (#'s 1-5)
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    • Addition and Subtraction
    • Addition and Subtraction Story Problems
    • Composing Numbers
  • Foundations in Operations Within 100  
    • Counting
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    • Addition and Subtraction - less than 20
    • Addition and Subtraction 20-100
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    • Word Problems Sums and Differences within 20
    • Thinking Deeper about Addition and Subtraction—The Unknown Number
    • Make it Easy Strategies
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  • Foundations in Operations Within 1000  
    • Place Value
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    • Addition and Subtraction within 100
    • Addition and Subtraction within 1,000
  • Applications in Operations Within 1000  
    • Word Problems Sums and Differences within 100
    • Thinking Deeper about Addition and Subtraction—The Unknown Number
    • Equal Groups
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