Question

What is 3.1 rounded to the hundredths

Answer 1

3.10
Add the zero since there is no other numbers after 1

Answer 2

3.10.
The reason:
3.1 is already rounded because
1 is ones
.1 is tenths
.01 is hundredths
And so on.
So you just add a zero to make it hundredths.
I had a question like this before and I answered it like that and it was correct.
So, your answer is 3.10
I hope this helps...