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2. Grid method multiplication - Wikipedia

   en.wikipedia.org/wiki/Grid_method_multiplication

   Compared to traditional long multiplication, the grid method differs in clearly breaking the multiplication and addition into two steps, and in being less dependent on place value. Whilst less efficient than the traditional method, grid multiplication is considered to be more reliable , in that children are less likely to make mistakes.

3. 6-year-old provides the most genius answer to his math problem

   www.aol.com/news/2015-11-04-6-year-old-provides...

   Sometimes the way kids respond to math tests are incredibly funny and even smarter than the answers their teachers expect. While everyone hates taking tests, some students are creative enough to ...

4. 10 Hard Math Problems That Even the Smartest People in the ...

   www.aol.com/10-hard-math-problems-even-150000090...

   Goldbach’s Conjecture. One of the greatest unsolved mysteries in math is also very easy to write. Goldbach’s Conjecture is, “Every even number (greater than two) is the sum of two primes ...

5. List of unsolved problems in mathematics - Wikipedia

   en.wikipedia.org/wiki/List_of_unsolved_problems...

   Prizes are often awarded for the solution to a long-standing problem, and some lists of unsolved problems, such as the Millennium Prize Problems, receive considerable attention. This list is a composite of notable unsolved problems mentioned in previously published lists, including but not limited to lists considered authoritative, and the ...

6. 100 prisoners problem - Wikipedia

   en.wikipedia.org/wiki/100_prisoners_problem

   Prisoner 2 opens drawers 2, 4, and 8 in this order. In the last drawer they find their own number, 2. Prisoner 3 opens drawers 3 and 6, where they find their own number. Prisoner 4 opens drawers 4, 8, and 2, where they find their own number. This is the same cycle that was encountered by prisoner 2 and will be encountered by prisoner 8.

7. Sierpiński triangle - Wikipedia

   en.wikipedia.org/wiki/Sierpiński_triangle

   Sierpiński pyramid recursion (8 steps) The Sierpiński tetrahedron or tetrix is the three-dimensional analogue of the Sierpiński triangle, formed by repeatedly shrinking a regular tetrahedron to one half its original height, putting together four copies of this tetrahedron with corners touching, and then repeating the process.