What I am taking from this is that mathematics and percentages might kinda sorta be getting very badly taught in a lot of schools, and an awful lot of textbooks are academic shovelware with bad formatting and poor explanations.https://twitter.com/jimalkhalili/status/1223130025148526592 …
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This is honestly fair point - though I'd also note that means of calculating percentages longhand often weren't taught well, or at all. It's time-consuming but 7% of 77 is easy when broken down (1% = 0.77, 10% = 7.7, 5% = 3.85, 7% = 5% + 1% + 1% = 5.39)https://twitter.com/nicohasa/status/1223223482160467969 …
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