It honestly depends on the kind of number line you have, it'd be between 0 and 1, very close to 1. In the image below, you see a number line that includes tenths between 0 and 1, and they also include .84.
Answer: It depends on what kind, if the intervals are by 1, out it between 0 and 1, but closer to 1. If its by 1/2, put between .5 and 1. and so forth
Explanation:
4.5m questions
5.7m answers