70
74 rounded off to the nearest 10 is 70.
When rounding 74 to the nearest 10, you look at the digit in the tens place, which is 7. Since the digit in the ones place (4) is less than 5, you round down. Therefore, 74 rounded to the nearest 10 is 70.
74
73.6
450.5
It is 70
74
74
74%
74
74