Number Sums
About Number Sums
Number Sums is a math logic puzzle where you select cells in a grid so that each row and column adds up to its target sum. It runs right in your browser on phone or computer, no download needed. With 5000 levels, there is always another puzzle waiting to test your number-crunching skills.
How to play Number Sums
Look at the target sums given for each row and column. Select the grid cells whose numbers add up exactly to those targets. Every choice affects both its row and its column, so you need to balance your selections carefully. Keep adjusting until every row and column total matches its required sum to complete the level.
Tips for playing Number Sums
- Start with the row or column that has the fewest possible cell combinations, since it is easier to solve first.
- Recheck both the row and column totals every time you select a cell, since one choice affects two sums at once.
- If a sum will not balance, undo a recent selection rather than guessing randomly across the grid.
Frequently asked questions
What is Number Sums?
Number Sums is a browser-based logic puzzle game where you select grid cells to match target sums for every row and column, across 5000 levels.
Do I need to download anything to play Number Sums?
No, Number Sums runs directly in your browser on both phone and computer, so there is nothing to download or install.
How many levels does Number Sums have?
Number Sums includes 5000 levels, giving you a long series of sum-matching puzzles to work through.
