Grade 3 Addition: 3-digit addition

Generate a printable Grade 3 addition worksheet for this skill. Change the difficulty, layout or problem count below, then print the worksheet or its answer key.

What students practice: Three-digit addition falls within the add-within-1000 standard.

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What to practice

GradeDifficulty

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Worksheet preview — matches what “Print worksheet” produces.Grade 3 · Addition · 3-digit addition · Standard

Grade 3 · Addition

3-Digit Addition

Name: Class: Date:

Set 1 · Grade 3 · Addition

Example problems by difficulty

Real samples from this generator. Every worksheet is a fresh random set, so yours will differ.

Easy

342 + 434 = ___
Answer: 776
434 + 433 = ___
Answer: 867

Standard

780 + 176 = ___
Answer: 956
581 + 515 = ___
Answer: 1096

Challenge

879 + 676 = ___
Answer: 1555
698 + 987 = ___
Answer: 1685

Where this skill fits

Next skill: 3-digit addition with regrouping
All grades: Addition worksheets, Grades 1–5

Related Common Core standards

3.NBT.A.2 — Fluently add and subtract within 1000.

The task matches what these standards describe at this grade. Common Core–informed practice; not a claim of official alignment.