place+value

5409 + 10 = 5419 5409 + 1,000 = 6409 5409 + 1 = 5410 5409 + 100 = 5509 5409 + 1,599 = 7008 5409 + 1,689 = 7098 5409 + 2,589 = 7998 5409 + 1,590 = 6999