Adding Three Numbers Worksheets
Free three-addend worksheets with single-digit addends and totals within 20. Preview questions, download printable PDFs, and check a separate answer key.
Make your worksheet
Adding Three Numbers Worksheets
Add all three numbers. Try finding a pair that makes ten first.
Name: ____________________ Date: __________
- 1.
9 + 0 + 1 = ___
- 2.
8 + 7 + 1 = ___
- 3.
1 + 5 + 3 = ___
- 4.
4 + 8 + 8 = ___
- 5.
0 + 9 + 9 = ___
- 6.
2 + 8 + 1 = ___
- 7.
3 + 2 + 9 = ___
- 8.
0 + 6 + 5 = ___
- 9.
3 + 1 + 7 = ___
- 10.
9 + 2 + 6 = ___
- 11.
2 + 3 + 4 = ___
- 12.
1 + 8 + 4 = ___
Print at actual size or 100%. Answer keys start on a new page. Changing the set changes the order and selection; familiar facts may appear again.
A worked example
6 + 4 + 3 = ___
Answer: 13
Combine 6 and 4 to make 10, then add 3. Grouping a helpful pair does not change the total.
How to use these worksheets
Each addend is a single digit and the sum stays within 20. Ask learners to look for a doubles fact or a pair that makes ten. They may regroup the addends, but every number must be used once.
Watch for this
A common slip is stopping after the first two numbers. Underline or cross off each addend as it is included.
Choose the next skill
Use easier facts for a warm-up, or connect this skill to another kind of question.
Printing and practice questions
Are the worksheets and answer keys free?
Yes. Generate and download these individual worksheets without an account. You can use them at home, in your classroom, or with your tutoring students.
Can I make a different worksheet next time?
Choose New questions for another set. Save settings remembers the question count, paper size, and answer-key choice on this device. It does not store learner names or progress.
Will this print on my paper size?
Select A4 or US Letter before downloading. Print the PDF at actual size. You can omit the answer key, or print only the question pages for learners.
What should I do if the questions are too difficult?
Start with six questions and work through the example together. Use the linked prerequisite skills or physical counters before trying another set. These are practice materials, not a diagnostic assessment.
Browse the original numbered worksheet sets
These existing worksheet links remain available.