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Common Core State Standard 2.NBT.6
Number & Operations in Base Ten
Use place value understanding and properties of operations to add and subtract.
6. Add up to four two-digit numbers using strategies based on place value and properties of operations.
Common Core State Standards: 2.NBT.6
Addition
Up to Four 2-Digit Numbers
2
3
4
5
Common Core State Standards:
2.NBT.6 
Number & Operations in Base Ten
Use Place Value Understanding and Properties of Operations to Add and Subtract
Add up to four two-digit numbers using strategies based on place value and properties of operations..
Students add 2-digit numbers using place value and commutative.
Addition
Up to Four 2-Digit Numbers
2 3
4
5
Common Core State Standards:
2.NBT.6 
Number & Operations in Base Ten
Use Place Value Understanding and Properties of Operations to Add and Subtract
Add up to four two-digit numbers using strategies based on place value and properties of operations..
Students add 2-digit numbers.