"Sum quiz" is train your brain.
Simple rules.
Used in addition to favorite number from 1 to 9,
"Exactly the given number" to
"Great for the specified number of times," Lets make on.
For example, In nine to 58,
9 +9 +9 +9 +9 +3 +3 +3 +3 = 58
And so on.
Rules it.
And Time Attack mode, endless mode.