Math Error Corrections

This cluster revolves around users admitting to and correcting their own mathematical miscalculations, numerical errors, or arithmetic mistakes in Hacker News discussions.

📉 Falling 0.5x Other
4,989
Comments
20
Years Active
5
Top Authors
#8180
Topic ID

Activity Over Time

2007
18
2008
44
2009
76
2010
118
2011
166
2012
179
2013
240
2014
208
2015
235
2016
235
2017
263
2018
284
2019
269
2020
339
2021
401
2022
452
2023
506
2024
493
2025
436
2026
27

Keywords

ValueError math oops thanks wrong error decimal whoops numbers arithmetic calculations

Sample Comments

cbsmith May 2, 2024 View on HN

You're right. I screwed up the math.

blamazon Apr 24, 2022 View on HN

Oops yeah you're right I typo'd in my calculations

margalabargala Oct 30, 2025 View on HN

Oops. You're very right. Math error on my part :( thank you for the correction.

jerven Apr 13, 2017 View on HN

Thanks you are correct, I messed up my numbers.

minimaxir Mar 4, 2020 View on HN

Oops, I can't math. Fixed.

matdehaast Apr 9, 2022 View on HN

Well spotted. My quick math was very incorrect. Thanks for the correction

std_throwaway Sep 1, 2017 View on HN

You are right. My math was off!

watsocd Nov 24, 2022 View on HN

Yes. Looks like I slipped a few decimal points.

xur17 Mar 15, 2018 View on HN

You're right. I did my math wrong.

sliverstorm Jul 11, 2011 View on HN

You're right, math fail. Thanks.