HOUSTON (KTRK) -- A mental math system developed in the 1800's is helping some local students ace standardized tests and win math competitions. But the method isn't taught in most Houston schools.

Start with a deck of cards. Before the trick, sneak a peek at the 10th card in the deck. Memorize it. Ask your volunteer to add the first and second digit of their number together. For instance, if he ...

Math shouldn’t be harder than finding the last matching sock in your laundry. These clever shortcuts convert head-scratching problems into quick mental wins. You’ll conquer calculations faster than ...