Sum Grid Puzzles — 2×2 to 5×5 | SumGrids
Free sum grid puzzles for kids. Swap tiles until every row hits the target — 2×2 (sum 5), 3×3 (sum 15), 4×4 (sum 34), 5×5 (sum 65). Play online, no download.
Open this page in a browser to play the interactive game.