500
Ms. Garcia's class is collecting their schools recycling. The third grade turns in 638 cans, the fourth grade turns in 1,235 cans, and the fifth grade turns in 2,617 cans. Estimate the total amount of cans Ms. Garcia's class collected - first to the nearest thousands place, and second to the nearest hundreds place.
Thousands place: 5,000
Hundreds place: 4,400