1st Grade 3×3 Classic Sum Puzzle
1st Grade students can play the 3×3 Classic SumGrids puzzle on this page — swap tiles until each row totals 15. No download required.
Activity summary
SumGrids 1st Grade 3×3 Classic page. Game type: tile-swap row-sum puzzle. Grid: 3×3. Target row sum: 15. Numbers used: 1–9. Recommended for 1st Grade. Skill: addition, planning, number sense. Free, browser-based, no login.
Why 3×3 Classic fits 1st Grade
The classic magic-square puzzle — every row must sum to 15. 1st grade focuses on addition within 20. This drill uses sums up to 10+10 for building fluency.
How to play
Tap two tiles to swap them. Row totals appear beside the grid. When every row equals 15, you win and can start a new puzzle.
Also try grade practice
1st Grade students can drill addition on our worksheet-style grids — fill in answers like "3 + 4 = ___".
FAQ
Is this 3×3 Classic puzzle free?
Yes. Play free in your browser with wins tracked locally.
What is the row target?
Every row must sum to 15.
Is it right for 1st Grade?
This mode is listed among recommended grids for 1st Grade on SumGrids.