It is 160.
Although many schools teach you to round 5 up, always rounding up from 5 is inappropriate because it introduces an upward bias. The IEEE (Institute of Electronic and Electrical Engineers) standard 754 is to round 5 up or down so that the new last digit is even. See link for more: //en.wikipedia.org/wiki/Rounding#Round_half_to_even
It is then 740 when rounded to the nearest ten.
320
260
rounded to the nearest ten... it would be 420.
Rounded to the nearest ten thousands it is 0. In fact, to the nearest ten it is 0.
165 rounded to the nearest tens place is 170
0
60
It is then 740 when rounded to the nearest ten.
36,184 rounded to the nearest ten thousands place is 40,000.
2602 rounded to the nearest ten is 2600.
320
20
260
Rounded to the nearest ten it is: 564,630
5240
73127850