Kindergarten number bonds worksheets

Number bonds worksheets show kindergartners a whole split into two parts in connected circles, with one number missing. The sheets lean on decomposing numbers and finding the partner that makes ten, so numbers become things you can pull apart and put back together.

Free printable PDF worksheet, aligned to Common Core K.OA.A.3, K.OA.A.4.

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The kind of problems you'll get

Fill in the missing part of each number bond.

  1. Fill in the missing part.

    Answer: 3

  2. Fill in the missing part.
  3. Fill in the missing part.

Every print pulls a fresh set of problems at this level, so a make-up test or a second sibling never gets the same sheet.

What's on each sheet

Every version prints on US Letter or A4, with its answer key on the last page.

How to teach this

Act each bond out with counters: put the whole in one pile, split it into the two circles, then say the sentence "6 and 4 make 10." For the make-ten bonds, keep a ten-frame nearby so your child can see the empty spaces that name the missing part.

Watch for: Kids add the two numbers they can see, even when one is the whole. If the big circle is filled in, the job is to find the missing part. Kids think each whole has only one right split. 10 can be 6 and 4, 7 and 3, or 5 and 5, and seeing many splits is the point.

Common questions about number bonds

What is a number bond, exactly?
A picture of a whole and its two parts, drawn as connected circles. It shows that a number like 10 can be split into pairs such as 6 and 4.
Why is making 10 such a big deal in kindergarten?
Pairs that make ten are the backbone of almost every mental math strategy that follows. Kindergarten is when those pairs get learned by heart.

Related worksheets

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Aligned to Common Core K.OA.A.3, K.OA.A.4. Reviewed by the One more sheet curriculum team. Content version 123, updated July 2026.