This is the full traditional grid, nine rows, nine columns, nine 3x3 boxes, but with generous starting clues so a student meeting it for the first time is not left staring at a mostly empty puzzle. Sixteen puzzles, two to a sheet, Name and Date line included, answer key at the back.
Easy Sudoku 9x9: classroom set
16 easy puzzles for grade 6 and up. Every puzzle can be finished with singles alone.
Free to print and share for classroom, library and care-home use. Read the one-paragraph licence.
What makes these easy
Each grid starts with 42 or more given digits, well above the 30 or so you would see on a hard puzzle. With that many clues in place, every remaining cell can be worked out with a naked single or a hidden single, the two techniques covered on our how-to-play lessons. No pencil marks or pairs needed, just careful scanning.
Using the answer key
Two puzzles sit on each sheet, so the answer key gives one small grid per puzzle, nine to a page, in the same order as the puzzle sheets. Keep the key at your desk and let students check their own work, or mark a stack quickly by holding a finished sheet against the matching key page.
Going further
For a full term rather than one set of sixteen, the monthly pack adds thirty new puzzles every month at three difficulty levels. And the how-to-play lessons walk through every technique from naked singles up to the advanced patterns, worked example included on each page.
Frequently asked questions
Grade 6 and up, though any student ready for the full 9x9 grid with generous clues can use it.
42 or more, which keeps every puzzle solvable with singles alone, no guessing and no advanced technique required.
Sixteen, printed two to a sheet, with a full answer key at the back of the PDF.
The monthly pack adds medium and hard puzzles alongside easy ones, thirty puzzles at three levels every month.
Yes. Hand out the answer key pages once a sheet is finished and let students compare their own grid against it, rather than collecting every sheet for marking.