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
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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