To be moved up (in schedule, rank, order); to be advanced (earlier or to a higher position).
締め切りが急に繰り上がって、来週になった。
The deadline was suddenly moved up and is now next week.
欠員が出たので、私の順番が繰り上がった。
Because of a vacancy, my turn/rank was moved up.
台風の影響で試合の開始時刻が繰り上がる可能性がある。
Due to the typhoon, the game may be brought forward in start time.
In arithmetic/mathematics, to be carried to the next digit (to carry over) in addition.
5＋7は十の位に1が繰り上がる。
5 + 7 carries 1 to the tens place.
小学生に繰り上がる仕組みを図で説明した。
I explained the carry-over mechanism with a diagram to elementary students.