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Grade 3 · NBT

Add and Subtract within 1000 Fluently

Add and subtract within 1000 using strategies based on place value, properties, and algorithms.

Grade 3Common Core 3.NBT.A.2NBTVerified correct ✓

Worked examples

509 + 45
Answer: 554
213 + 104
Answer: 317

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More Grade 3 topics

Multiplication FactsDivision FactsMultiplication and Division Word ProblemsFind the Unknown in a Multiplication or Division EquationTwo-Step Word ProblemsArithmetic Patterns in Addition and Multiplication TablesRound to Nearest 10 or 100Multiply One-Digit Numbers by Multiples of 10