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Unit 1: Understanding Ten Ones Make a Ten
Unit 2: Using Data to Add and Subtract Within 20
Unit 7: Developing Addition and Subtraction Strategies
Unit 9: Using Place Value to Read, Write, Represent, and Compare Numbers
Unit 10: Extending Strategies for Solving Addition and Subtraction Problems
Unit 12: Adding Multiples of Ten
Unit 14: Interpreting and Using Symbols in Numeric Expressions and Comparisons
Unit 15: Using Understanding of Place Value to Add and Subtract
Unit 16: Applying Properties of Operations to Solve Problems
Unit 18: Demonstrating Proficiency in Addition and Subtraction Situations