Spread the numbers among the baskets as long as possible. Consider math operations.
The rules are simple. There are three buckets (at the bottom of the screen). Each bucket contains a number. The number must be greater or equal to 0 and less or equal to 30. At the top of the screen you can see math operations which you should apply to the buckets (by tapping on a bucket). Think fast otherwise when the timer goes off the math operation will be applied to a random bucket.