What is 3.1 rounded to the hundredths

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...

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

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle