Number span · By size
Remember a string of digits shown one at a time — the classic test of short-term memory.
Digits appear one after another. When they stop, type them on the keypad. Each success adds one digit. Enter the digits from smallest to largest, not in the order shown.
How to play
Digits appear one after another. When they stop, type them on the keypad. Each success adds one digit. Enter the digits from smallest to largest, not in the order shown.
What it trains
Holding numbers, letters and words in mind — the memory you use for phone numbers, PIN codes and lists.