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Mathematics - Common Core Standards

Operations and Algebraic Thinking for Grade 2

Represent and solve problems involving addition and subtraction.

  • 2.OA.1. Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.
Addition Word Problems
Addition Word Problem Adding Blocks    
       
Subtraction Word Problems
Subtraction Word Problem Subtraction Word Problem Subtraction Word Problem Subtraction Word Problem
Subtraction Word Problem Subtraction Word Problem Subtraction Word Problems Subtraction Word Problem
Subtraction Word Problems Subtraction Word Problems Subtraction With Regrouping  

Add and Subtract within 20

  • 2.OA.2. Fluently add and subtract within 20 using mental strategies.2 By end of Grade 2, know from memory all sums of two one-digit numbers.
Addition Generator Balanced Equations with Sum Of 3 Balanced Equations with a Sum of 4 Balanced Equation With Sum of 5
       

Work with equal groups of objects to gain foundations for multiplication

  • 2.OA.3. Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends
Even and Odd Even and Odd Numbers Even and Odd Leaves Even and Odd Footprints
Addition of Equal Addends      
  • 2.OA.4.Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.
Rectangular Array      
       

 

 

The Common Core State Standards are © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved. For more information about the Common Core State Standards, visit their website at http://www.corestandards.org

 
Math Worksheets

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The Common Core State Standards are © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved. For more information about the Common Core State Standards, visit their website at http://www.corestandards.org