Source:
https://resilienteducator.com/classroom-resources/10-tricks-for-doing-fast-math/
https://www.scientificamerican.com/article/5-tips-for-faster-mental-division-part-1/
Video:
YOU ARE READING
DO NOT CLICK ON THIS..... OR ELSE!!
Non-Fictionfor nerdy geeks and other curious people, title = interests of stereotypical nerdy geeks
