Play / puzzles·1× card
Number Cross
A criss-cross where every answer is a number and every clue is a little calculation. Answers show in the app.
Example
Each clue's answer is a number; crossing squares share a digit.
🔒 The answer is never printed — it shows in the app (and via the page's QR code).
How to play
- It works like a crossword, but every answer is a number and every clue is a quick calculation.
- Solve a clue and write one digit per square.
- Where two answers cross, they share a digit, so you can use one answer to check the other.
- Check your answers in the app.
How it works
Fully procedural: a real criss-cross grid where every answer is a number and every clue is a quick calculation. Little kids add, subtract, double and halve; middle ages use times tables and day/hour facts; olders get squares, cubes, roots, percents and perimeters. Crossing squares must share a digit, so you can check yourself. Answers show in the app only.
What you can set
- Appropriateness dial (kindergarten → adult) — tune it per card. Picks the age band (which kinds of clues appear).
Age dial (1–20): Number size grows by set: 1–6 up to 2 digits, 7–10 up to 3, 11+ up to 4.