Here’s a math test: Without a calculator and without writing down any numbers, multiply 105 by 105, and by the way, have the answer in mind by the end of this sentence. Solve 208 times 208, and have ...

Memorizing multiplication tables may be a seminal school experience, among the few that kids today share with their grandparents. But a Stanford University professor says rapid-fire math drills are ...

BRAINERD, Minn. -- Consider this math problem: Find the square root of 49, double it, minus 5, square it, subtract 1, divide by 4, cut in half, cut in half, subtract 1, divide by 2, cut in half, cut ...

Ever dreamt of solving math problems in your head with the speed of a calculator? Mental math might seem challenging, but it's a skill attainable through the right tools and techniques. The abacus, an ...