Answers to 6 and 7

6. To figure this out, you need to know what numbers are under the numbers we can see, so :

Here are the hidden numbers on the white grid

And here's how they fit over the grey grid

So, then we compare to the numbers on the grey grid:

7. To figure this out, you need to know what numbers are under the numbers we can see, so

at fold one, those are:

and after fold #2. the hidden numbers are:

Comparing to the grey grid we get: