When you round to the nearest ten, you are looking for numbers like 10, 20, 30, etc. These all have a zero in the ones place. In the case of 34 34 is closest to 30, so you would round it to 30.
10 - 15 - 20 - 25 - 30 - 34
34 rounds to 30.
30
34 x 6 (204) rounded to the nearest tens place is 200.
34.00
Anything from 25 to 34
30
0
60
It is then 740 when rounded to the nearest ten.
30
36,184 rounded to the nearest ten thousands place is 40,000.
The answer will depend on the degree to which the number is rounded. Without any indication of that, it is not possible to answer the question sensibly.
2602 rounded to the nearest ten is 2600.