
Studies show that only 60 percent of Japanese 20-somethings are able to correctly solve this math problem, compared to a whopping 90 percent 30 years ago.
Math isn’t exactly my strong suit. If it were, I probably wouldn’t be making a living writing juvenile jokes on the Internet. So, it’s without any shame whatsoever that I say I was absolutely stumped by the following math problem:
9-3÷1/3+1
Luckily, I’m in good company: 60 percent of Japanese 20-somethings, and even the largely infallible Google Calculator itself (almost certainly the predecessor to Skynet), were unable to solve the problem correctly.
At least the Japanese adults and Google make an attempt at correctly solving the problem, instead of, like me, just shrugging and mumbling, “Iunno. Three?,” but the solution they arrive at—9 —is apparently still wrong.
There is, of course, a somewhat deceptive explanation for all of this. It may not be that kids these days are getting dumber – as your ornery uncle and most New York Times op-ed columnists insist. Well… they may be getting dumber, but this math problem, at least, doesn’t accurately depict the intellectual decline of millennials, is what we’re saying. Because, you see, the problem lies in how 20-somethings are reading the equation.
Apparently, 30 years or so ago, it was generally understood that the “1/3” part of the problem wasn’t to be read as “one-third,” but instead indicates that you need to divide. So, following that logic, you come up with this process to solve the problem:
9-3÷1/3+1
9-3÷(1/3)+1
9-3×3+1
9-9+1
=1

Japanese news stories, written largely by middle-aged guys who got their start on typewriters are, unsurprisingly, blaming those dagnab computers, the Netterwebs and probably also rap music.


Philosophy with numbers: The math problem that stumped the Japanese internet
We visit a Maths Cafe in Japan and discover an adorable icy polar bear dessert
Can you solve this crazy difficult, super satisfying math puzzle from a Japanese middle schooler?
Sinisterly simple math puzzle for elementary school kids stumps Japanese Twitter adults
Train station platform ramen store closes its doors on half a century of history in Tokyo
7-Eleven Japan’s giant fried chicken skewer would be too big to eat, so it’s really for cuddling
Japanese man drives truck that’s on fire directly to fire station, drops flaming potatoes[Videos]
Studio Ghibli adds new Mother’s Day gift sets to its anime collection in Japan
Japan’s budget chain restaurant Saizeriya might just be the perfect first date location
Are Japanese convenience store sandwiches scamming us with their fillings?
The next time you’re feeling stressed out, you could relax on a Pokémon Psyduck chair from Japan
Virtual idol Hatsune Miku redesigned with look that adds new elements and brings back old ones
Beautiful 3-D puzzle kit lets you build Ghibli’s Spirited Away bathhouse with no tools, glue【Pics】
Starbucks Japan opens new Kyoto store in Place of Scenic Beauty
Studio Ghibli releases Catbus pullback keychain that runs like the anime character
Nine great places to see spring flowers in Japan, as chosen by travelers (with almost no sakura)
Starbucks Japan opens new cafe and art gallery in top Tokyo tourist neighbourhood
Komachi Shokudo: Japanese mum’s-style cooking for breakfast, lunch and dinner in Tokyo
Pizza Hut Japan teams up with creator of one of the country’s best kinds of ramen for ramen pizza
The top 10 graduation songs in Japan as chosen by current Japanese high school students
Is Japan’s Crab-shaped Cup Ramen Timer worth the hype?
Starbucks Japan unveils new sakura cherry blossom collection for hanami season 2026
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
The 10 most annoying things foreign tourists do on Japanese trains, according to locals
Naruto and Converse team up for new line of shinobi sneakers[Photos]
Starbucks Japan releases first-ever Hinamatsuri Girls’ Day Frappuccino
Starbucks Japan unveils new sakura Frappuccino for cherry blossom season 2026
Now is the time to visit one of Tokyo’s best off-the-beaten-path plum blossom gardens
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Japan’s newest Shinkansen has no seats…or passengers [Video]
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says
9+3=12? Nope, that’s wrong, says Japanese kid’s elementary school, thanks to “cherry calculation”
Japan suffers 37th consecutive year of low birthrate, Japanese people may become extinct someday
Meet the people and organizations who are tackling the problem of childhood hunger in Japan
“A dead bug” and other amusing, adorable, snarky, and downright ridiculous test responses
Coca-Cola Japan in trouble as slumping sales, other problems put it in the red
“Hate summer homework, kids? We’ll do it for you!” A disturbingly booming business in Japan
Wait, the Japanese word daijoubu can mean both “yes” and “no?” Why? HOW?!?
Google Japan unveils tea-cup shaped keyboard with open-source all-fish input system
Only one demographic in survey is happy about Japan’s workplace obligation Valentine’s chocolate
20 signs that a woman should think about quitting the Japanese company she works for
Most of Japan’s new adults hope to fall in love and get married, according to recent survey
Better living through gambling at Japan’s “Day Service Las Vegas”
Getting a driver’s license in Japan the hard way: The End