3.NBT.A.2 Worksheets: Add and Subtract Within 1,000
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3.NBT.A.2 (Number and Operations in Base Ten): Add and subtract within 1,000 fluently.
About this standard
By the end of third grade, children add and subtract within 1,000 fluently, using place value, properties of operations, or the link between addition and subtraction. Estimating to the nearest hundred before each problem catches most answers that are far off. Mixed column practice is in Mixed 3-Digit Addition and Subtraction, and Missing Addends Within 1,000 uses the link between the two operations.
