Worksheet studio

Live preview · Save when you’re ready

Arithmogon Triangles

Each edge is the sum of its two corner numbers.

Example

Make it yours

Changes preview instantly. Save keeps them in your history.

What would you like to change?

Change the number range, seed or separate answer key. Vertical Operations also supports addition, subtraction and multiplication. Ten frames always make 10; array and sharing factors stay at 6 or below.

One update: text 1 credit + 5 per new picture. Pictures generate automatically when needed. Manual edits, previews, saving and downloads are free.

Edit content

Smallest part or operand

Largest part or operand

Array and sharing factors must stay at 6 or below. Ten frames always use a total of 10.

Puzzle seed

Change this number for another set of problems.

Include separate answer key

Advanced settings

No unsaved changes

About this template

Use the sum on each edge to recover the three corner numbers. A solved triangle demonstrates the rule; generated clues always have exactly one nonnegative integer solution.

Suggested ages 7–11 · connected equations

Activity references

MathsBot arithmogons