How do you round 12,840 to the nearest ten?
Well, it depends on whether your number is twelve thousand eight hundred and forty (12 840) or
If it is 12 840, then the number is already to the nearest ten as there are no digits smaller than ten (40 is a multiple of ten).
However if it is 12.840 then the nearest ten would be
Hope this helps! Let me know if I can do anything else:)