round each number to the nearest 10

19- 20 65- 60 3- ? is it 1 or 10?
Thank you for the help.

19 rounded to the nearest 10 is 20. You're right.

However, when the last digit is 5 or more, you'd round up to the next 10. 65 rounded to the nearest 10 is 70.

3 rounded to the nearest 10 = 0.