Sudoku for Kids #81
sudoku · ages 5-8 · medium
Editorial team · Published August 12, 2026

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This free printable sudoku for kids features a clear 6x6 grid, thoughtfully designed with bold 2x3 boxes that make it easy to see the distinct sections. About half the numbers, from 1 to 6, are already filled in, giving your child a satisfying head start as they work to complete each row, column, and box. The goal is to place the numbers 1 through 6 in every empty square, ensuring no number repeats within any row, column, or the larger 2x3 box. It’s wonderfully satisfying to see the grid slowly fill up, creating a perfectly balanced number puzzle.
To tackle this sudoku, encourage your child to start by scanning for rows, columns, or 2x3 boxes that are nearly full. If a row, for example, only has one empty square, it’s often easiest to figure out which number from 1 to 6 is missing and place it there. This "single missing number" strategy builds confidence and provides quick wins, helping them understand the core rules before moving on to more complex deductions where multiple options might exist.
A great tip for parents and teachers is to laminate this printable page or slip it into a clear plastic sleeve. Your child can then use a dry-erase marker to solve the puzzle, erasing and trying again as many times as needed. This simple trick transforms it into a reusable activity, saving paper and allowing for repeated practice, which is fantastic for developing logical reasoning and number sense without the pressure of getting it right on the first try.
Teacher notes
Skills practiced
- Logical reasoning and elimination
- Number recognition and one-to-one checking
- Persistence with a multi-step problem
- Explaining reasoning aloud: "this must be a 3 because..."
Suggested use in class
- Math warm-up projected on the board, solved together
- Independent center with the answer key face-down for self-checking (pair up students who need support)
Time estimate
10–15 minutes
Materials
- Printed page
- Pencil with eraser
Download & print — it's free
US Letter (8.5×11"). Print at home, no sign-up needed.
Tip: set your printer to “Fit to page” for best results.
Includes answer key (page 2 of the PDF)
Print just page 1 for the puzzle, or both pages to keep the solution handy for checking.
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Frequently asked questions
Is this sudoku size right for a beginner?
Smaller grids are the on-ramp: 4×4 boards suit first-timers, 6×6 suits kids who've solved a few and want more of a challenge. This 6×6 is a good step up once the 4×4s feel easy.
How long should a kids' sudoku take?
Anywhere from five minutes to half an hour is normal, and speed doesn't matter. If it's over in two minutes, move up a grid size; if it stalls completely, solve the next number together and hand the pencil back.
Can my child do this one alone?
That's the sweet spot of this age — hand it over and let them own it. Resist hovering: figuring out a sticking point solo (or choosing to ask for help) is a bigger win than a perfectly completed page.



