Woher weiß ich, was mit dem Bruch zutun ist?

In einer Frage hier, wo Schuhgrößen wichtig waren, ist mir etwas aufgefallen: Woher weiß ich denn, wann ich mit dem Bruch was mache?



Oder:



Oder haben sich Mathemathiker darauf geeinigt die obere Schreibweise in größen Formeln nicht zu benutzen?

(2 votes)
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Wechselfreund
10 months ago

2 1/2 is common as a spelling, but actually contradicts mathematical rules:

2 1/2 = 2+ 1/2

Advantages should not be omitted (multiplication mark at Varaiablen but already: a b = a*b)

Wechselfreund
10 months ago
Reply to  Moped85

I’ve always talked about it. Name “mixed spelling”.

However, I also had a colleague who ignored it because it was “mathematually wrong”.

Wechselfreund
10 months ago

No, not at all!

Uwe65527
10 months ago

Add: 2+1/2 = 5/2 = 2.5

Uwe65527
10 months ago
Reply to  Moped85
MonkeyKing
10 months ago

The upper is a spell not to use the mathematicians.

MonkeyKing
10 months ago
Reply to  Moped85

I don’t know why you’re learning this way, I think it’s an intermediate step to break billing, but I think it’s more confusing. But in some professions this spelling is probably also used.