Home › Worksheets › Mystery picture
Every square hides a sum. Solve it, colour it with the key, and a picture appears!
Colour by code turns a page of sums into a surprise: every square of a 12 × 12 grid holds a calculation, each answer matches a colour in the key, and when all the squares are coloured a picture appears — a heart, a star, a smiley, a tree, a flower or a house. Children practise dozens of facts without noticing, and they check themselves, because a wrong answer leaves a square of the wrong colour in the picture. Choose addition within 10, subtraction within 20 or times tables.
Best for ages 5–10
Six — heart, star, smiley, tree, flower and house — with new calculations on every sheet.
Yes. The key shows each colour as a small square with its name, so a black-and-white print still works.
Yes, it shows the finished picture in colour.
Prefer practising on a tablet? Adaptive maths practice — offline, safe and free on Google Play.