Is there a way of accessing Basic Maths Assistant within Wolfram Mathematica online notebooks?
It seems that Wolfram Cloud does not support palettes. See the following post (which is seven years old)
https://community.wolfram.com/groups/-/m/t/551841
For more details on cloud support see this.
Hans Milton, thank you for the update. Of course, I only just joined Mathematica a couple of weeks ago. The information is very much appreciated. Cheers.