Calcudoku
Free printable calcudoku (mathdoku)
A number square with arithmetic in it. Every row and column uses each number once — there are no three-by-three boxes here. The grid is divided into dotted cages, and each cage’s corner clue is a target and a sign: 12× means its digits multiply to 12, 3- means they differ by 3. Subtraction and division cages are always two cells, so the order never matters.
Download the free set
Calcudoku
Calcudoku
A number square with arithmetic. Every row and column uses each number once, and every dotted cage has to hit its target under the sign printed beside it. Also sold as mathdoku.
Checked: exactly one solution
Letter PDF for Calcudoku, 83 KB A4 version of Calcudoku, 166 KB Answers for Calcudoku, Letter PDF, 58 KB
PDF · Letter and A4 · 20 puzzles · 81 KB · answer sheet is a separate file
What’s in it
- Puzzles
- 20
- Grid size
- 5x5
- Difficulty
- Easy
- Print size
- 18 point or larger
- Paper
- US Letter and A4, both included
- One puzzle per page
- Yes
- Answers
- Included, as a separate file
- Price
- Free. No account, no email address.
Printing these
Print at 100 %, not “fit to page” — “fit to page” shrinks the grid and the point size along with it. Ordinary paper is fine; matte holds pencil better than glossy. The answer sheet is a separate file so you can print the puzzles on their own.
Yours to print, as many times as you like. What you may do with these
More sets like this
Sudoku
Sudoku
The classic. Nine rows, nine columns, nine boxes, and the numbers 1 to 9 in each of them.
Checked: exactly one solution
Letter PDF for Sudoku, 51 KB A4 version of Sudoku, 101 KB Answers for Sudoku, Letter PDF, 50 KB
PDF · Letter and A4 · 20 puzzles · 51 KB · answer sheet is a separate file
Killer Sudoku
Killer Sudoku
Sudoku with no starting numbers at all. Dotted cages tell you what each little group adds up to, and no digit repeats inside a cage. That is genuinely enough to solve it.
Checked: exactly one solution
Letter PDF for Killer Sudoku, 107 KB A4 version of Killer Sudoku, 302 KB Answers for Killer Sudoku, Letter PDF, 83 KB
PDF · Letter and A4 · 20 puzzles · 106 KB · answer sheet is a separate file
Word Fill-In
Word Fill-Ins
A crossword with no clues at all. You get the whole word list, grouped by length, and one word already in place. The rest fits together exactly one way.
Checked: exactly one solution
Letter PDF for Word Fill-Ins, 94 KB A4 version of Word Fill-Ins, 281 KB Answers for Word Fill-Ins, Letter PDF, 81 KB
PDF · Letter and A4 · 20 puzzles · 93 KB · answer sheet is a separate file