Number Memory

How to play

Six memory challenge types.

• Recall — memorize a number, type it back.
• Running Total — numbers appear one by one. Enter their sum.
• Max/Min — numbers appear one by one. Enter the largest or smallest.
• Digit Sum — memorize a number, enter the sum of its digits.
• Position Recall — numbers flash one by one. Recall the number at position N.
• Grid Recall — memorize a grid of numbers. When it hides, enter the number from the highlighted cell.