Adding to the proposal of BobaFret: I would first calculate the big part of the number, then the small part. For example: $$2048+1296=?$$ First do the big part: $$2000+1200=3200$$ Then the small part: ...

You can identify polyhedra with polynomials. Let $a_0$ be the number of vertices, $a_1$ the number of edges and $a_2$ the number of faces, then the polynomial for a 3D polyhedron is $p_3(x)=-x^3+a_2x^... View answer 2 votes I cannot provide any research results supporting my claim, but intuitively, I'd assume that it can work out if the level of the exercises is low enough to provide success experience. For example, I ... View answer 2 votes I would propose Kenken (http://www.kenkenpuzzle.com). It gives you a feeling of numbers, that is: Which (prime) factors appear in which numbers. View answer 2 votes First of all let me mention that I'm a physics student and therefore cannot tell you whether Lie theory is interesting for a mathematician. Also I don't know the specific book you are referring to. ... View answer 1 votes I use the app Xournal (with a Thinkpad X200 Tablet as hardware, currently available at about 200€ in very good used state) and get output like this: My handwriting could be better, but I think, it ... View answer 0 votes When identifying$y$with$f(x)$we implicitly consider a point$(x;y)$lying on$f$'s graph. However, this doesn't have to be the case. Say, we take$f: x\mapsto x^2$, then the point$(x;y)=(2;f(2))=(...

I tried two other ways along the graphical representation you are proposing. A lookup table: In the first line note some values for $x$: -2, -1, 0, 1, 2 In the second line note the corresponding ...