How to play
- Circle the correct numbers that add up to the values on the sides of the rows, columns and regions.
- Use the toggle to switch between circling and erasing modes. It will help you to mark the correct numbers and the extra numbers that you don't need.
- Each level of these math puzzles has only one possible solution, so make sure that the rows, columns and colored regions work together at the same time.
- Train your math skills with this free number puzzle with various levels of difficulty. Open different types of board from 3x3 to 10x10.
