Grade 3 > Standards for Mathematical Practice > Number & Operations in Base Ten > Use place value understanding and properties of operations to perform multi-digit arithmetic > CCSS.MATH.CONTENT.3.NBT.A.2
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
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CCSS.MATH.CONTENT.3.NBT.A.2 teaching resources
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