5000
3,612
3612
64000
94000
130
1000
600
5229 to the nearest thousandth is simply 5229. There are no decimals to round. But if you meant "thousand", then it is 5000 because the "229" is below the cutoff of "500" (in which case you would round up). If it were 5500 or more, you would round to 6000.
94000
56000
500 000
1000
The number 78500 rounded to the nearest thousand is 79000.
If the thousands are 5 or greater, round up. Four or below, round down. 4,760,000
130
90
40
400
10
200