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Home / Teaching Resources / Grade 2 / Standards for Mathematical Practice / Number & Operations in Base Ten / Use place value understanding and properties of operations to add and subtract / CCSS.MATH.CONTENT.2.NBT.B.5
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
(View this topic on www.corestandards.org )