Sum Master, the ultimate number puzzle game that’s as fun as it is challenging! Dive into grids filled with numbers and put your mental math and logic skills to the test. Your goal is to select numbers so that the sums of every row, column, and colorful region hit the target values—sounds simple, but each puzzle demands careful thinking and strategy.

• Select numbers carefully so that:
• The sum of numbers in each row matches the clue number on the right side.
• The sum of numbers in each column matches the clue number at the top.
• The sum of numbers inside each colored region equals the small number shown within that region.
• Use logic and addition skills to fill the grid correctly.
• No guessing needed—just thoughtful calculation!
• Enjoy this challenging free online HTML5 math puzzle on both desktop and mobile!

Plays: 19
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Genre: Puzzle