2.NBT.B.7 Worksheets: Add and Subtract Within 1,000
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2.NBT.B.7 (Number and Operations in Base Ten): Add and subtract within 1,000 using models and place value.
About this standard
Children are expected to understand why the written method works, not only to follow it, so drawings and blocks still count as solutions. Base-ten blocks make trading across hundreds visible. Practice with Three-Digit Addition With Regrouping and Three-Digit Subtraction With Regrouping; review 2.NBT.B.5 first if needed.
