When rounding to a specific place, take a look at the digit immediately to the right of the target, in this case, the hundreds place. If that digit is 4 or less, zero everything to the right of the target out. If that digit is 5 through 9, increase the target by one and zero everything to the right of it out. If the target is a 9, increasing it will turn it to zero and increase the digit to the left of the target by one.
322000
94000
84000
23000
35,905,584 rounded to the nearest ten thousands is 35,910,000
99,995 rounded to nearest thousands is 100,000
48,229,930 rounded to nearest thousands is 48,230,000
Rounded to the nearest tens, 234890 is 234890. Rounded to the nearest hundred, it is 234900. Rounded to the nearest thousands, it is 235000. Rounded to the nearest ten thousands, it is 240000. Rounded to the nearest hundred thousands, it is 200000.
13000
167000
8000
20000
0
6000
322000
94000
84000