Number Bonds Worksheets (Free Printable PDF)
Twelve number bond diagrams a page, each with the total at the top and one part missing from the two circles below.
Free · no watermark · no sign-up for your first 20 downloads a day
Fillable PDF — type into the fields online or in any PDF viewer before printing.
Each bond is drawn the way it appears in class: a circle holding the total, two lines branching down to two smaller circles, one filled in and one empty. Twelve of them fill the page in three columns of four, with enough space around each that a young child can write a large number in the empty circle without running into the next question. The missing part swaps between the left and right circle so the pattern cannot be guessed.
The total option covers the three stages most schools teach. Bonds to 10 come first and use every part from one to nine, so all nine pairs turn up across a couple of sheets. Bonds to 20 extend the same idea across the tens boundary, which is where most children need the practice. Bonds to 100 use multiples of five, keeping the arithmetic mental rather than written and matching the way bonds to 100 are usually introduced.
The empty circle in every bond is a form field, so the sheet can be used on a tablet with a stylus or typed into directly. Turn the answer key on and the PDF becomes two pages: the worksheet, then the same twelve bonds with the missing parts printed in red. The same total always produces the same twelve bonds, so a key printed once keeps matching.
