If you have no idea, it’s best to hold back. It would have been easy to look up this type of problem, which is very common in elementary schools in Germany. Here’s an explanation of how “number walls” work (in German): https://de.wikipedia.org/wiki/Zahlenmauer
OP’s math problems are most likely AI-generated because they contradict the fundamentals of this type of problem.
If you have no idea, it’s best to hold back. It would have been easy to look up this type of problem, which is very common in elementary schools in Germany. Here’s an explanation of how “number walls” work (in German): https://de.wikipedia.org/wiki/Zahlenmauer
OP’s math problems are most likely AI-generated because they contradict the fundamentals of this type of problem.