4×4 Number Sudoku — Medium
Eight numbers given, eight to find: this 4×4 number sudoku, medium level, asks children aged 6-7 to use rows, columns and boxes together.
2 A4 pages · for home and classroom use
Sudoku 4×4 — medium
How to use this worksheet
- In the top-left puzzle, the first column is already complete (2, 3, 4, 1) while the second column is empty. Start from the rows, not the empty column.
- In the bottom-left puzzle the first column is empty. Fill the other columns first; the empty one will follow.
- For each empty square, list what is already in its row, column and box, and see which number is left.
- Compare with the solution page.
What this worksheet teaches
Each 4×4 puzzle has four 2×2 boxes, and every row, column and box must contain 1, 2, 3 and 4 once. With 8 numbers given, a row rarely has three numbers filled, so children must combine a row with a column or a box to find an answer. Every puzzle has exactly one solution, so no guessing is needed. This kind of combined checking is the core skill of all sudoku.
Scanning a column, then a box
Take one number, for example 3, and look for it in every column and box. If a box has no 3 yet, and three of its squares are blocked because their row or column already has a 3, the 3 must go in the fourth square. This method, called scanning, works the same way on 9×9 grids.