Arithmetic that makes you cringe

[hellymedic]

32F = 0C
-32 F = -35.5555C

[Giraffe]

Oops - it was 29ºC. Corrections beget errers.

[Lightning Phil]

I wonder what percentage of people here instinctively came up with 1 or 9?
I thought 1, due to the lack of a * before the parenthesis. If the * was there, I'd have said 9.

* is a coding thing rather than how it would be written in maths notation. Just like you’d write 3y not 3*y when writing the equation out.

[Cudzoziemiec]

I do wonder if this stuff should be in "Grammar that makes you cringe" not "Arithmetic..."

[T42]

I do wonder if this stuff should be in "Grammar that makes you cringe" not "Arithmetic..."

Maths notation being a formal grammar, yes.

[Giraffe]

 can't quite get this:
"UK halves emissions by 50%". The UK has halved its emission over the last 32 years - OK, but that headline... Could be 25% I suppose.