To round the number 65 to the nearest ten, we first look at the digit in the ones place, which is 5.
According to rounding rules, if the digit in the ones place is 5 or greater, we round up. In this case, since the ones digit is 5, we add 1 to the tens digit, which is 6, making it 7.
Thus, rounding 65 to the nearest ten gives us 70.