The answer will depend on the units used for 343200. Are they days, hours, minutes, seconds, milliseconds, microseconds? Since you have not bothered to provide that information, I cannot provide a sensible answer.
1560
987 rounded to the nearest 100 is 1000.
2.7
988
20.78
7.6
13.49
1560
It is 958
0.1
117 rounded to the nearest 100 = 100
987 rounded to the nearest 100 is 1000.
303 to the nearest 10 = 300
Oh honey, 4651 rounded to the nearest thousand is 5000. It's not rocket science, just move that decimal point three spots to the left and call it a day. Keep it simple, darling.
The correct answer is zero when rounding 106 to the nearest thousand.
It is 30 because .5 rounds up to 1
25.010