Grade 3 Addition Worksheets
Free printable addition practice for Grade 3 students. Generate problems, solve them on screen or paper, and download as PDF.
Practice Worksheet
Grade 3 Addition Practice
Solve each problem. Show your work.
- 1.540 + 6 = _____
- 2.338 + 112 = _____
- 3.192 + 198 = _____
- 4.345 + 442 = _____
- 5.328 + 46 = _____
- 6.123 + 190 = _____
Show answer key
- Question 1: 546
- Question 2: 450
- Question 3: 390
- Question 4: 787
- Question 5: 374
- Question 6: 313
Free Practice Worksheets
Print, solve on paper, then upload a photo for instant AI grading and feedback.
Build confidence with approachable problems
Solve each problem. Take your time.
- 1.345 + 218
- 2.462 + 129
- 3.273 + 346
- 4.518 + 254
- 5.197 + 432
- 6.605 + 287
Full range of grade expectations
Solve each problem. Show your work.
- 1.Calculate the sum: 487 + 325.
- 2.A library has 256 mystery books and 348 adventure books. How many books are there in total?
- 3.Find the missing number in this pattern: 120, 240, 360, ____.
- 4.A farmer planted 415 apple trees in the morning and 297 pear trees in the afternoon. How many trees did the farmer plant altogether?
- 5.Compare the two sums. Which is greater: (150 + 200) or (180 + 190)?
- 6.Fill in the missing addend: 562 + _____ = 900.
Practise specific Addition skills
What Your Child Will Learn
Grade 3 addition focuses on multi-digit operations with numbers up to 1,000 and beyond. Students refine regrouping across multiple place values and develop efficient written methods (the standard algorithm). They also strengthen mental math by adding hundreds, then adjusting.
Word problems become more complex, requiring students to choose between addition and subtraction and sometimes use both in multi-step problems. Students also begin adding amounts of money (dollars and cents) and working with addition in measurement contexts like perimeter. Fluency with basic addition facts is expected, freeing up working memory for these larger computations.
Skills Covered
- Adding numbers up to 1,000 with regrouping
- Using the standard addition algorithm
- Mental math: adding hundreds and adjusting
- Solving multi-step word problems with addition
- Adding money amounts (dollars and cents)
- Finding perimeter using addition
Curriculum Aligned: Aligned with Strand B (Number): adding whole numbers to 1,000 using a variety of strategies, including the standard algorithm.
Parent Tip: Connect addition to real life — let your child help add up grocery totals, calculate distances on a map, or tally scores during a game.
What your child will practice
- Addition and Subtraction FactsRecall addition facts to 20 and related subtraction facts, and recall multiplication facts for 2, 5, and 10.
- Multi-digit AdditionAdd whole numbers with up to three digits, using a variety of strategies.
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Check my workFrequently Asked Questions
How many addition problems should my child practice each day?
10-15 problems per day is ideal. Short, consistent daily sessions build addition fluency faster than long, infrequent practice. Focus on accuracy first, then speed.
What addition strategies should my child learn?
Key strategies include counting on, making ten, doubles and near-doubles, and breaking numbers apart (decomposition). Start with manipulatives, then move to mental math.
When should my child have addition facts memorized?
Most curricula expect basic addition fact fluency (sums to 18) by the end of Grade 2. Grade 3-4 students should handle multi-digit addition with regrouping confidently.