Quick - what's the square root of 2? What do you mean you don't have a calculator? Well, you can start guessing, right? So let's work this through. You know you have an upper bound - it has to be less ...

Mastering quick square root calculations boosts maths exam performance. Speed and accuracy provide a significant advantage in algebra and geometry. Memorising key square roots and using mental math ...

Years ago, no math education was complete without understanding how to compute a square root. Today, you are probably just reaching for a calculator, or if you are writing a program, you’ll probably ...