Since 770 is a whole number, it is already rounded to the nearest thousandth.
Or could it be 770.000?
To the nearest ten: 770 To the nearest hundred: 800
The whole number part ends with 5, so it rounds up to 770.
It's already at the nearest ten...
It is 770 when rounded to the nearest ten
765
770
If we round $776 to the nearest $10, that is $780. Note that you only need to increase $776 by $4 to get to $780, but you would need to decrease it by $6 to get to $770. That's why this amount is nearer to $780 than to $770.
770
770
770
770
800