51.550
51.5497 rounded to the nearest thousandths is 51.550
45.0099 rounded the nearest thousandths is 45.010
It is already rounded to the nearest hundred thousandths. Rounded to the nearest thousands would be 87.381.
42.746
37.210
329.546
0.968
100.000
3.299
342.964
409.020
0.200
0.330