The answer is 3,000 because the 5 next to the 2 make it go up.
It is 2500
2539, 2541 and 2542 rounded to the nearest ten will round to 2540.
29,632 to the nearest thousands is 30,000
12,934 to the nearest thousands is 13,000
78,499 to the nearest thousands is 78,000
2,500 to the nearest thousands is 3,000
1,500 to the nearest thousands is 2,000
47,803 to the nearest thousands is 48,000
8,344 to the nearest thousands = 8,000
56,798,354 to the nearest thousands is 56,798,000
45,469.23 to the nearest thousands = 45,000
6,333 to the nearest thousands = 6,000