• Without more context I would say that typically you would go with the minimum threshold value.  In your case that would be 10.

• Shirui,
You will always be told HOW to round on the ARE. The test will say round up, or round down, etc. Don't sweat this.

• I've personally had 3 separate experiences like this.  The questions did not say whether to round up or down, instead it said round to the nearest whole number.  Needless to say, I was confused by which number to put down.

• That is very interesting, surprised to hear that.  Good to know.

Shirui, what I would say to you is that, if they do say "round to the nearest whole number," but do not identify rounding up or down, you should do the following (using the numbers between 9 and 10 as an example):

-If it's in between 9 and 9.49, use 9.

-If it's in between 9.51 and 10, use 10.

-Trust that the answer is NOT going to end up being 9.5 right on the money, because that would leave you wondering what you should do in that instance, and the exam will not have that kind of scenario.  Once you do your calculation, using the approach above, you will know what to do.

Hope that helps.