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.
0.166 to the nearest thousands = zero
8,344 to the nearest thousands = 8,000
9,798 to the nearest thousands = 10,000
45,469.23 to the nearest thousands = 45,000
6,333 to the nearest thousands = 6,000
56,798,354 to the nearest thousands is 56,798,000
78,500 to the nearest thousands = 79,000
1,380,021 to the nearest thousands = 1,380,000
2,006 to the nearest thousands = 2,000
19,628 to the nearest thousands is 20,000