2nd Grade 3×3 Classic Sum Puzzle
2nd 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 2nd 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 2nd Grade. Skill: addition, planning, number sense. Free, browser-based, no login.
Why 3×3 Classic fits 2nd Grade
The classic magic-square puzzle — every row must sum to 15. 2nd grade adds two-digit mental math and subtraction as inverse of addition.
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
2nd Grade students can drill addition, subtraction 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 2nd Grade?
This mode is listed among recommended grids for 2nd Grade on SumGrids.