Square roots by hand — a totally unnecessary, but awesome thing to know! Personally, I love using diagrams. I know that if sometime down the road someone asks me to calculate a square root, I ...

Back in old times before calculators were allowed in math and science classes, students had to do calculations long hand, with slide rules, or with charts. Children today still learn how to add, subtract, multiply, and divide by hand, but 40 years ago chi

To calculate a square root by hand, first estimate the answer by finding the 2 perfect square roots that the number is between. A perfect square root is any square root that's a whole number. For example, if you're trying to find the square root o