Which subject does Nobita usually get zero marks in most frequently?

Okay, here is the translation:

What Subject Does Nobita Usually Get Zero In?

If you're a fan of Doraemon, or even if you've only seen a few episodes, you'll definitely recall this classic scene: Nobita dejectedly holding a test paper marked with a big, red "0".

So, what subject is that zero most often in?

The answer is very clear: Math (also called Arithmetic in elementary school).

Why Math?

Highest Appearance Rate In the manga and anime, the vast majority of scenes showing Nobita getting a zero are for math tests. Whether it's simple addition, subtraction, multiplication, division, or slightly more complex word problems, he somehow manages to avoid every correct answer. While his Japanese language grades are also terrible (especially kanji writing), the "zero in math" label seems tailor-made for him.
Reflection of His Character This setup actually fits Nobita's personality perfectly. He's naturally lazy and dislikes hassle, while math is a subject requiring high concentration, strict logic, and patient, step-by-step calculation. This is the natural enemy of someone like Nobita, whose mind wanders freely and who always looks for the easiest (or most cut-corner) way to solve problems.
The Classic Plot "Trigger" "Nobita gets zero in math" -> "Gets scolded by his mom/mocked by classmates" -> "Runs home crying to Doraemon" -> "Doraemon pulls out a mysterious gadget"... This has become a classic opening pattern for Doraemon stories. A math zero acts like a trigger, setting off countless strange and hilarious adventures.

To Sum Up

So, in conclusion, Nobita's signature "zero-score subject" is Math. This isn't just a recurring gag in the series; it's deeply ingrained in his character design. Alongside "marksmanship genius" and "cat's cradle expert," it's one of the most memorable labels we associate with Nobita.