First, let's find the place values for the number 38,051.
3 = ten thousands
8 = thousands
0 = hundreds
5 = tens
1 = ones
You want to round to the nearest 1,000, so we'll be looking at the thousands place (the 8) and the number to the right (the hundreds)
Remember the rounding rule: more than 5 = round up, less than 5 = round down
Check the number to the right (the hundreds place). It's a 0, since it's less than 5, we round all numbers to the right down to 0.
Therefore, 38,051 rounded to the nearest thousands place is 38,000