Number Bonds Worksheets
Updated October 2026 · 10 free printables
A number bond shows how a number splits into two parts: 10 is 7 and 3, or 6 and 4. Kids fill in the missing part or the missing whole in colorful bond diagrams, from bonds to 5 for kindergarten up to bonds to 100.
Number bonds are the picture behind addition and subtraction, which is why so many first grade textbooks start with them. Every page has an answer key.
All 10 Number Bonds Worksheets, One by One
Here is a closer look at every page in this collection: what it practices, which grade it fits and a tip for each one.
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1. Number Bonds to 5
A free printable number bonds to 5 worksheet with an answer key. Fill in the missing part. The two parts together make the whole. Big pictures and only a few tasks per page make it a gentle start for kindergartners. Use counters split into two piles to check a tricky bond.
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2. Number Bonds to 5 (Set 2)
A free printable number bonds to 5 (set 2) worksheet with an answer key. Fill in the missing part. The two parts together make the whole. Big pictures and only a few tasks per page make it a gentle start for kindergartners. Use counters split into two piles to check a tricky bond.
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3. Number Bonds to 10
A free printable number bonds to 10 worksheet with an answer key. Fill in the missing part. The two small circles add up to the big one. Big pictures and only a few tasks per page make it a gentle start for kindergartners. Use counters split into two piles to check a tricky bond.
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4. Number Bonds to 10 (Set 2)
A free printable number bonds to 10 (set 2) worksheet with an answer key. Fill in the missing part. The two small circles add up to the big one. Big pictures and only a few tasks per page make it a gentle start for kindergartners. Use counters split into two piles to check a tricky bond.
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5. Make 10 Number Bonds
A free printable make 10 number bonds worksheet with an answer key. Every whole is 10. Which part is missing? It suits ages 4 to 6, and little ones can count the pictures with a finger. Say each bond out loud: 6 and 4 make 10.
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6. Number Bonds: Find the Whole
A free printable number bonds: find the whole worksheet with an answer key. Add the two parts and write the whole in the top circle. It matches first grade goals, roughly ages 6 to 7. Use counters split into two piles to check a tricky bond.
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7. Number Bonds to 20
A free printable number bonds to 20 worksheet with an answer key. Find the missing part or the missing whole. First graders can do it on their own once they know the strategy at the top of the page. Say each bond out loud: 6 and 4 make 10.
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8. Number Bonds to 20 (Set 2)
A free printable number bonds to 20 (set 2) worksheet with an answer key. Find the missing part or the missing whole. First graders can do it on their own once they know the strategy at the top of the page. Say each bond out loud: 6 and 4 make 10.
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9. Number Bonds to 100
A free printable number bonds to 100 worksheet with an answer key. Every whole is 100. Find the missing part. Tip: make the next ten first. It fits second grade, around ages 7 to 8. Use counters split into two piles to check a tricky bond.
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10. Number Bonds to 100 (Set 2)
A free printable number bonds to 100 (set 2) worksheet with an answer key. Every whole is 100. Find the missing part. Tip: make the next ten first. It fits second grade, around ages 7 to 8. Use counters split into two piles to check a tricky bond.
Tips for number bonds worksheets
- Say each bond as a sentence: 7 and 3 make 10.
- If a part is missing, start from the whole and count back.
- Practice bonds to 10 until they are automatic; they power the make-10 strategy later.
Fun math facts
- Number bonds are a key part of Singapore Math, which became popular in US schools in the 2000s.
- There are 11 number bonds to 10 if you count 0 + 10 and 10 + 0.
- Every number bond hides a whole fact family of addition and subtraction facts.
Fun ways to use your printables
- Split a pile of 10 grapes into two plates and name the bond before eating.
- Play 'bonds to 10' with a deck of cards: find two cards that make 10.
- Draw a big number bond with chalk outside and stand in the circles.
How to print
Click Download PDF and print at 100% on US Letter or A4 paper. Page 1 is the worksheet and page 2 is the answer key, so choose “page 1” in the print dialog if you only want the practice page. Every worksheet is free for home, homeschool and classroom use, so print as many copies as you need.
Frequently asked questions
What is a number bond?
A small diagram with the whole in the top circle and its two parts below. 8 on top with 5 and 3 below means 5 + 3 = 8 and 8 - 5 = 3.
Why are number bonds to 10 so important?
Knowing every pair that makes 10 makes later math much faster: 8 + 5 becomes 8 + 2 + 3, and 13 - 5 becomes 13 - 3 - 2.
When do kids learn number bonds?
Bonds to 5 and 10 in kindergarten, bonds to 20 in first grade and bonds to 100 in second grade.
Can my child use objects?
Yes. Counters, coins or LEGO bricks split into two piles are a great way to check a bond.