What is taught in school

The topic today is pretty trite.
School and what it is today taught our children.

But what happened a few days ago brought me to the state: "either the skis do not go or ... well, you know."

Actually to the heart of the matter.
')
Son is studying in 2nd grade. A couple of days ago he called me - "Dad, help me solve the puzzle."
Why not help.



Attention task.



The son, of course, has already written one number (999).
I do not know, maybe I was wrong, or not there, or those were not taught, but I could not reveal the secret of the second number.

Maybe a respected community will help?

This I still keep silent about the "tasks" in the subject "The World".
Although, perhaps, I will quote one of them:

“Why is snow falling?”

No more, no less. It is "why." Not “why”, not “from”, not “to”, not “how”, but namely “why”.

And the compilers of such “textbooks” are not aware of the fact that snow basically cannot “why”. And they probably don’t care that with such idiotic questions they make the child’s brain work differently, and to believe that it’s “different” is right. And then we are surprised with illiterate speech, writing, idiotically-composed sentences, and so on.

ps Why is the fox sly? "The world"

UPD.

Adding a screenshot is already turning. With the indication that the tasks on the "number system" and "normal" are interspersed. And how can we guess that in this case you can use a non-decimal number system?

And for supporters that the problem is solved with the "use" of number systems. Pay attention to the second half of the turn. Only there they begin to learn to FOLD these numbers (non-decimal).