The nine white squares inside the main red grid should be filled with the digits 1 through 9. Each digit should appear only once in this main grid. Two of these numbers are already provided for you. Place the other digits in the correct spots so that the mathematical equations work both across and down. IMPORTANT: Remember algebraic rules when solving the problems... multiplication and division should be performed in the first step, then addition and subtraction in the second. Good luck! Here is my... READ ON

The nine white squares inside the main red grid should be filled with the digits 1 through 9. Each digit should appear only once in this main grid. Two of these numbers are already provided for you. Place the other digits in the correct spots so that the mathematical equations work both across and down. IMPORTANT: Remember algebraic rules when solving the problems... multiplication and division should be performed in the first step, then addition and subtraction in the second. Good luck! Here is the... READ ON

Welcome to a brand new year of mental_floss Brain Games. Here's one to get 2010 started with a bang: The nine white squares inside the main red grid should be filled with the digits 1 through 9. Each digit should appear only once in this main grid.Â Two of these numbersÂ are already provided for you. Place the other digits in the correct spots so that the mathematical equations work both across and down. IMPORTANT: Remember algebraic rules when solving the problems... multiplication and division... READ ON

The ZIP in ZIP Code stands for Zone Improvement Plan.