We have a situation here we are trying to figure out how to handle. We have some 3rd grade math material that is teaching the student how to come up with answers in their head. Unfortunately they have chosen a method of presentation that is not easily transcribed. We have generated a few possibilities of what could be done with this material but in this case we simply are not sure and would value a second opinion.
I suggest using the first method of each of the examples you have brailled. The horizontal spacing (which matches print spacing) makes the vertical arrangements more obvious, both to the braille reader and to the sighted teacher, aid, or parent who may be helping the student. I think this transcription is clear and easy to read. Nicely done.