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Common Core: Math
CCLS - Math: 2.NBT.7
- Number And Operations In Base Ten
- Use Place Value Understanding And Properties Of Operations To Add And Subtract.
- State Standard:
- 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.
- Welcome to “Math Studio Talk” a video series that provides games, activities and models to help students develop flexible thinking and deep understanding of math concepts from kindergarten to Grade 5...
- Grade 2 Math Common Core Instruction: Use modeling and tools to solve three digit subtraction problems