I was taught this method of calculating a square root by hand when I was a child in public school. I have since been surprised by the number of people my own a

I was taught this method of calculating a square root by hand when I was a child in public school. I have since been surprised by the number of people my own age who were never taught. Since many Canadian high schools only teach "pre-Calculus" now, it makes me wonder if anyone is learning the "long hand" method for square roots these days.