Number Bonds to 20 Worksheet
One page of practice — enough for a session, not so much that it turns into a chore. Teachers are welcome to use it with a whole class.
Choose "Fit to page" in your print dialog for a perfect result on any paper size. Ordinary printer paper is fine, and greyscale printing saves colour ink.
No signup needed. Free for personal & classroom use — see our license.
About this printable
This clear and simple worksheet focuses on number bonds up to 20. It features three number bond diagrams with the top number and one bottom number provided, leaving the other blank for students to complete. Below the diagrams are equations requiring students to find the missing number that adds up to 20. The clean design with ample white space makes it easy to focus on the math.
Ideal for young learners in kindergarten or first grade, this worksheet supports the development of addition fluency and number sense. It's perfect for use in a classroom setting, for homework assignments, or as a quiet activity at home to reinforce math concepts. Children can fill in the blanks directly on the page.
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Questions about this printable
Is there a catch with this free download? ▾
None. There is no signup wall and no trial: the page you print is the page you see, without a watermark. Ads around the page are what keep it free.
What paper size does it print on? ▾
The file is laid out for US Letter (8.5 × 11 in) and prints just as cleanly on A4 — turn on "Fit to page" in your print dialog and it scales to about 97%, which nobody can see by eye.
Can I print it more than once? ▾
As many times as you like. Plain copy paper is all it needs. If you use the same sheet daily, slip it into a plastic wallet and write on it with a dry-wipe marker — one printed page then lasts weeks.
Can I use it in my classroom? ▾
Yes. Teachers, homeschool parents, childminders and libraries may print unlimited copies for their own children at no cost and with no permission needed. The only thing you may not do is sell it, sell prints of it, or pass the file itself around — share a link to this page instead.
Is there more like this? ▾
This page is part of 8 Free Number Bonds to 20 Worksheets, which has 8 printables in it. You can take them one at a time, or use the "Download all" button on the set's page to get every page in one go.
Can I change it? ▾
This one is a true vector PDF — every line is a shape and the text is still live text, so it opens in Illustrator, Inkscape, Affinity or Canva and can be edited. That is for your own use: the licence does not allow reselling it, edited or not.
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