Fill in the grid with a pattern of black and white squares, so that the numbers in each row and column match the lengths of consecutive runs of black squares.
Left-click in a square to mark it black; right-click to mark it white. Click and drag along a row or column to mark multiple squares black or white at once. Middle-click to return a square to grey (meaning undecided): dragging like that can erase a whole rectangle, not just a row or column.
We hope that the free math worksheets have been helpful. We encourage parents and teachers to adjust the worksheets according to the needs of the child. For more difficult questions, the child may be encouraged to work out the problem on a piece of paper before entering the solution. We hope that the kids will also love the fun stuff and puzzles.
We welcome your feedback, suggestions, comments and questions about this site; please submit your feedback via our Feedback page.