“In the example I was wondering where the 81 came from.”
Me, too. If that’s an actual example of how they require the problem “3x9=?” to be solved, they should be shot. There is no way a normal child should be required to jump through that many mental hoops to answer such a simple problem.
The goal might actually be to destroy a child’s ability to learn, as Talisker said.
You should watch the Youtube on that ...