For example, say I want to convert 1/7 to its representation as a repeating decimal? Is the fastest way just to do long division, or is there a faster way?
0 . 1 4 2 8 _____________________ 7 ) 1. 0 0 0 0 0 0 7 ------------ 3 0 2 8 -------- 2 0 1 4 ------- 6 0
I would say it is still necessary, to a much lesser extent perhaps. There are so many times I want to do a calculation but don't have my phone at hand, or it seems like too trivial a calculation to go through all the button pressing and screen swiping it takes to open a damn calculator app, or it is just too inconvenient to waggle a phone/calculator around (like when shopping). Times when I go to pay in a shop and I give the person a few extra coins so they can give me back a note instead of a heap of change, a look of fear always sweeps across their face. For example, the other day I paid for $10.50 of items with a $20 note and a 50c and the guy was very unsure about giving me a $10 note in change.Whatever might be the answer to this basic question. IMO it simply disguises the fundamental difference between now and then... This has fundamentally changed and younger people normally aren't used to numeric solutions anymore. It isn't needed... Comparable effects could be said about the usage of units. I can't even estimate how often I requested to pull units through an entire calculation.