Square ANY number in 3 seconds - 4 math tricks

Finding the square of a nmuber is easy - just follow these mental math tricks. You'll be able to calculate squares faster than ever and amaze everyone with your utter genius! To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To support tecmath on Patreon:   / tecmath   To buy tecmath mechandise: https://teespring.com/stores/tecmath-... #fastmathtricks #mentalmath #mathtrick