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this post was submitted on 06 Jun 2025
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Showerthoughts
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A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The most popular seem to be lighthearted clever little truths, hidden in daily life.
Here are some examples to inspire your own showerthoughts:
- Both “200” and “160” are 2 minutes in microwave math
- When you’re a kid, you don’t realize you’re also watching your mom and dad grow up.
- More dreams have been destroyed by alarm clocks than anything else
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Nor should you. I'm a Maths teacher.
And yet you still don't understand what's wrong with what you said.
That's what you need to do. You're the one coming up with wrong answers when you change the order. Changing the order doesn't change the answer.
It's not me who doesn't get it. I teach it.
I feel bad for your students if you cannot see why you are wrong here.
My students know I'm right. Everyone's students know that's right. It's only adults who've forgotten the rules who get this wrong.
Whatever you say. Enjoy the egg on your face bud.
None on my face. My students do very well in their tests. How about you? BTW try it on a calculator and guess what answer you'll get. hint: it'll be the same answer regardless of which order you do it 😂
To save you some trouble, here's the results from my calculator...
10+1-1=10
10-1+1=10
-1+10+1=10
+1+10-1=10
-1+1+10=10
1-1+10=10
10-1+1=10 only if you don't the addition first 1 + 1 = 2 - 10 = 8, which was my mistake, which I already stated.
Now jog on "math teacher".
Nope, yet again you just did 10-(1+1), which is wrong for 10+1-1. It gives 10 in any order. 10+1-1=11-1=10 <== did addition first, got 10. Accountants would have a nightmare if order mattered. "Did we receive this payment first, or this invoice? The order matters! ARGH!"
No, your mistake was adding brackets, 10-(1+1) ISN'T how to do addition first. 10+1-1 is. Ask an accountant! 😂 As you discovered 10-(1+1)=10-1-1, which isn't 10+1-1, nor 10-1+1. 10-1-1=8, which is what you did - 10-1-1=10-(1+1) - 10-1+1=10, 10+1-1=10.
I see you still didn't try it on a calculator yet then
I know it is wrong, which is why I am telling you what my mistake was originally. The fact that you still don't get it demonstrates your complete lack of understanding.
Order does matter, and that order is left to right. My mistake was doing the addition before the subtraction when the equation reads 10 - 1 + 1.
How are you still not getting this?
No it wasn't. The original equation is written correctly but the logic is incorrect because in order to make it work the way I declared you have to do the equation x - y + z doing the y + z first (which was the mistake doing addition then subtraction instead of addition and subtraction in order from left to right.)
I see you are still being a bad teacher who refuses to listen, so I am not continuing with you. The fact that you still don't get it demonstrates bad faith, willful ignorance, and an unwarranted superiority complex.