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Number Bond Worksheets

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Number bonds to 5, 10, 20 or 100 with a part or the whole left empty, and an answer key. A new sheet each time you change the sheet number.

Bonds to
Empty circle

Up to 24 characters. The name is drawn on the sheet and nowhere else. It is not saved, and it is not in the file name.

Wholes
Bonds on a page
Answer key

The same number prints the same problems.

Style
Options: paper size
Paper
  • Free
  • No ads
  • US Letter or A4

Class set

One copy for every student: type the first names and get one PDF, with each name on that student's own pages. Every student's pages use the same settings.

Class lists are used only to draw the pages and are never saved.

Every student gets the same problems (the same Sheet number), so one answer key checks them all.

Number Bonds to 10NameDateScore/ 12Write the missing part in each bond.Every bond makes 10 · a part missing · 12 bonds104102100103105103100106109109102106Free at multiplicationcharts.appSheet 1

Updates as you choose. Print at 100% (actual size) so nothing is cut off.

Practicing multiplication? Multiplication worksheets

Three sheets to start with

Number bonds to 10 with a missing part

Bonds to 10

Every bond makes 10 and one part is empty. The first bond: 6 and 4 make 10.

Twenty number bonds with the whole missing

Find the whole

Twenty bonds with wholes up to 20; the whole is the empty circle. The first: 10 and 5 make 15.

Nine number bonds to 100 with mixed missing numbers

Bonds to 100

Nine bonds to 100, any one circle empty. The first: 54 + 46 = 100.

How to use it

  1. Choose the number the bonds make, then which circle is left empty.
  2. Press Download PDF, or Print to print it straight away.
  3. Choose Yes under Answer key to add a second page with every answer, under the same sheet number.

Ink saver leaves out the colored fills, for a black-and-white printer or to use less ink.

Charts to print

Chart 1–12Up to 144Chart 1–10Up to 100Chart 1–15Up to 225Chart 1–20Up to 400Blank chartFill it inTimes table chartEvery table written outChart 1–100100 × 100, on 40 pagesHundreds chartCounting 1–100WorksheetsPractice problemsAddition and subtractionWorksheets and timed testsDivisionFacts and long divisionFact familiesTriangles and housesFlash cardsTimes tables 1 to 12Chart 1–25Up to 625Chart 1–30Up to 900Chart 1–50Up to 2500Skip countingBy 2s, 5s, 10s and more

Times tables

One sheet for each table from 2 to 12: the facts, then a practice column.

Questions and answers

What is a number bond?

A whole and the two parts that make it, drawn as three circles joined by lines: 10 at the top, 6 and 4 below.

What does bonds to 10 mean?

With All the same, each whole is 10 and the parts change. With Up to the number, the wholes change too, from 2 up to 10.

Can the whole be the empty circle?

Yes. Choose The whole to add the two parts, A part to find a missing part, or Mixed for any one of the three.

Is zero ever a part?

In bonds to 5 and to 10 a part can be 0, as in 5 = 5 + 0. Bonds to 20 and to 100 start at 1.

Is there a number bond answer key?

Yes. Choose Answer key: page 2 fills in every empty circle in blue (dark gray with ink saver).

Preview