2nd Grade Adding 3 Numbers Worksheet
Add three numbers by looking for a pair that makes ten, then adding the third number.
- Homework
- Morning Work
- Centers
- Review
- Intervention
Download the Free Printable PDF
No sign-up required. Clean, low-ink US Letter format.
- Grade
- 2nd Grade
- Subject
- Math
- Skill
- Addition
- Topic
- adding three numbers
- Difficulty
- Standard
- Time
- 10 minutes
- Pages
- 2 (incl. answer key)
- Format
- Printable PDF (US Letter)
- Answer key
- Included
- Best for
- homework, morning work, centers, review, intervention
Worksheet details
What This Worksheet Practices
Students will add three one-digit numbers, looking for a pair that makes ten first.
- Adding three one-digit numbers
- Finding a pair that makes ten
- Adding in any order
Worksheet Preview
Find a friendly ten first
Adding three numbers is easier when students remember they can add in any order. The smart move is to scan for a pair that makes ten - in 4 + 6 + 3, add 4 + 6 = 10, then 10 + 3 = 13. Ten is the easiest number to add onto, so this keeps the mental math simple.
How to use it
Have students look for the ten before adding left to right. This applies the make-a-ten strategy to three addends and leads into column addition with no regrouping.
👩🏫 Teacher note
Teach students to scan for a friendly ten first: in 4 + 6 + 3, add 4 + 6 = 10, then 10 + 3 = 13. Addition can be done in any order.
🏠 Parent note
Look for two numbers that make 10, add them first, then add the last number.
Common Mistakes to Watch For
- Adding left to right and losing track
- Missing an easy pair that makes ten
Answer Key
Each answer shows the total.
⬇ Download Answer Key (PDF)Related Worksheets
2-Digit Addition Without Regrouping Worksheet
Add two-digit numbers by adding the ones and the tens separately — no carrying needed yet.
2-Digit Addition with Regrouping Worksheet
Practice adding two-digit numbers that require carrying a ten — the heart of second-grade addition.
Open Number Line Addition Worksheet
Use the open number line to add two-digit numbers by jumping tens, then ones.
100 More, 100 Less Worksheet
Find 100 more and 100 less than a number by adding or removing one hundred-flat.
Frequently Asked Questions
Is this worksheet free to download?
Yes. You can download and print this worksheet for free, with no sign-up required.
Does it come with an answer key?
Yes — a complete answer key is included.
Original & reviewed. Every worksheet is created in-house from a grade-level skill brief, checked for a correct answer key, and reviewed for grade-appropriateness. Our editorial policy.