Interactive Addition Patterns (2nd Grade)

Dream Box – Matching Number Pairs for Two Hundred.  Students practice computation strategies and identify number patterns and relationships to make two hundred in a variety of ways.  Lesson

Dream Box – Addition with Tens on the Number Line.  Using an open number line, students jump by tens to decompose addition problems into friendly steps.  Lesson

adding-2

 

CCSS.MATH.CONTENT.2.NBT.B.7
Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.

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