> I made this game for my children to play

Mathematician here. It's fun, but it's quite hard! How old are your children?

[spoiler alert?]

I finally solved it in 4 steps. It needs a lot of backtracking planning. I has to guess which will be the last expression and try to reach the numbers that it used.

I don't play too much Wordle, but my approach was just trying to find a word that is not to stupid (like reusing a lot of letters that are already grey) and just hopping that that the new info will make the next step easier.