How do I transcribe a KenKen into a Google Sheets?

Question

Similar to this previous question, I have been slowly working through some PDF puzzle books. I will shortly come up on KenKen puzzles (called TomTom in the book, but the format is the same). Here is an example from the Wikipedia article:

I can very easily draw the cages by thickening some borders, and the cells which have only solution-numbers should be simple as well. However, I'm not sure how to put the problem-numbers (11+, 20x) so that they share a box with a solution-number. I would prefer for the solution-numbers to look the same in all cells but if I have to modify them somehow to make them share space with problem-numbers that is fine with me.

Google Sheets is non-negotiable. I am not willing to use an inserted drawing, as suggested by a comment to the previous question. Within these constraints, how do I transcribe a KenKen into a Google Sheets as simply as possible? Solutions which take up less cells of of the underlying Google Sheets are preferred.

Answer 1

First, resize the rows and columns like this:

Then create the cages using borders option.

After that, select the rows with a short height and adjust the font size.

Then insert the clues.

Finally, select the down-arrow next to the tab name and turn off Gridlines.

And solve the puzzle!