Fundamental basics of mathematics are important for elementary/primary school pupils. Once arithmetic is mastered, there is no point in having high school, college and university students burden with such time-consuming tedious task. Instead, the requirements in quizzes and examinations should stop at deriving equations with symbols.
Creative students who are curious but easily get bored by routine calculations lose interest in pursuing STEM fields further. There should be emphasis on qualitative understanding of physical phenomena (e.g., electron versus electro-magnetic waves, etc.) rather than quantitative answer of 11 Newton, 22 Watt, 33 Tesla, etc. Students's brains should not be wasted by routine calculations and unit conversions. Instead, they should explore concepts by flow charts, block diagrams, pseudo-codes, thought experiments, etc.
In real life, numerical calculations are done by software applications anyway.
