98 rounded to the nearest 10 is 100. Any number between 90-100 rounded to the nearest 10 would have to be 90 or 100. Anything between 90-94 rounds down to 90. Anything between 95-99 rounds up to 100.
29
100
99
100
9610
990
60
It is then 740 when rounded to the nearest ten.
30
36,184 rounded to the nearest ten thousands place is 40,000.
-98
2602 rounded to the nearest ten is 2600.
320
20
260