Number Bonds Worksheets

Part-part-whole number bond worksheets in small steps: bonds to 5 with dots to count, bonds to 6, 7, 8, 9 and 10, mixed bonds within 10, bonds to 20 and bonds to 100 in tens. Plus a fact families sheet and a blank number bond template. Every worksheet PDF has its answer key on page 2. All free to print, no sign-up, with vector PDFs for US Letter and A4 paper.

Number bonds to 5, 6, 7, 8, 9 and 10

Number bonds within 10, to 20 and to 100

Number Bonds Within 10 printable worksheet

Fact families and a blank number bond template

Number Bonds Fact Families printable worksheet

Make the parts visible with ten frames and the make 10 worksheet, or count on along the 0–20 number line. Then put the bonds to work on the addition and subtraction worksheets. More for this age: kindergarten math worksheets and first grade math worksheets.

Collections: Kindergarten Math Worksheets First Grade Math Worksheets Second Grade Math Worksheets

How to use these pages

A number bond shows how a number splits into two parts. The big circle is the whole and the two small circles are the parts: 10 can be 7 and 3, 6 and 4, or 10 and 0. Knowing the bonds to 10 by heart makes adding, taking away and counting on much quicker, because children can see that 8 + 5 is 8 + 2 + 3.

Start with bonds to 5 (the sheet has a row of dots to cross out), then 6, 7, 8 and 9, and then the bonds to 10, the ones used most. Bonds within 10 mix adding (the whole is missing) with finding a part. Bonds to 20 and bonds to 100 in tens come next, and the fact families sheet turns each bond into two adding and two taking away facts. The blank template is for making up your own.

Frequently asked questions

What are number bonds?

Number bonds are pairs of numbers that add up to a given number. The number bonds to 10 are 0 + 10, 1 + 9, 2 + 8, 3 + 7, 4 + 6, 5 + 5 and the same pairs the other way round.

What grade are number bonds for?

Most children meet number bonds to 5 and 10 in kindergarten and first grade (Reception and Year 1 in the UK, Years 0 to 2 in New Zealand). Bonds to 20 usually follow in first grade, and bonds to 100 in second grade (Year 2).

Do the worksheets have answers?

Yes. Page 2 of every PDF is the answer key, and “Show solution” shows the answers on screen. The blank template has no answers, because children write their own bonds.

How do I teach number bonds?

Use real things first: ten counters split between two hands, or a ten frame with two colours. Say the bond aloud (“seven and three make ten”), then write it in the circles. Once a bond feels easy, ask for the missing part without the counters.

Is there a PDF to print?

Yes. Every page has free PDF downloads for US Letter and A4 paper, with the picture centered inside print-safe margins. Choose "Download PDF (Letter)" or "Download PDF (A4)" on the page and print at 100% (actual size).