3-Digit Addition 1

Three-digit sums with regrouping.

Grade 3 · Year 4 ➕ AdditionFree1 page + answer keyCCSS 3.NBT.A.2

3-Digit Addition 1 worksheet

+ answer key

🎯 Skill: Addition with 3-digit numbers
⏱️ Time: 15–20 minutes
🌱 Learning goal: Use the column method for addition

Instructions for kids

Add the numbers. Show your work if you need to.

Standards alignment

Common Core 3.NBT.A.2: Fluently add and subtract within 1000.

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