Multiplication pixel puzzles are colour-by-number puzzles where the numbers to colour in are given by the multiplication tables. For example in the long, lost animal picture below, you colour in only squares that contain a multiple of 9. Think about different algorithms to follow to colour it in. Look first for patterns in the numbers that make up the times table concerned and you may be able to find ways to spot (and remember) the multiples.
This shows how new algorithms are often based on spotting patterns.
- pattern matching and algorithmic thinking
- the times tables
9 times table Pixel Puzzles
- Pixel Puzzle: 9 x Table: A long lost animal pixel puzzle [PDF]
- Pixel Puzzle Solution: 9 x Table: A long lost animal pixel puzzle solution [PDF]
- RAW Pixel Puzzle: 9 x table: a long lost animal (RAW version) [PDF]
- RAW Pixel Puzzle Solution: 9 x table: a long lost animal solution (RAW version) [PDF]
5 times table Pixel Puzzles
- Pixel Puzzle: 5 x Table: Seafaring pixel puzzle by Lilly age 8 [PDF]
- Pixel Puzzle Solution: 5 x Table: Seafaring pixel puzzle solution by Lilly age 8 [PDF]
- RAW Pixel Puzzle: 5 x table: seafaring by Lilly age 8 (RAW version) [PDF]
- RAW Pixel Puzzle Solution: 5 x table: seafaring solution by Lilly age 8 (RAW version) [PDF]
Try our other kinds of pixel puzzles or even make up your own times table pixel puzzle.
If you can program, write a program that is given a list of numbers representing the picture, the size of the grid and the times table it uses, and prints out the picture e.g. using spaces and stars. Write different versions of the program that follow the different algorithms you thought up.
This activity is inspired by the wonderful Multiplication Tables Colouring Book series by Hilary McElderry, Tarquin Books (https://www.tarquingroup.com/). Buy them for more multiplication colour-by-number puzzles.