
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
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We try an unusual buffet of dishes made from wild game at a roadside stop in Chiba
Hokkaido has an Ice Festival that’s less famous than the Snow one, but beautiful in its own way
Village Vanguard’s Blue Lucky Bag may have the most impressive piece of junk ever created
We followed Tokyo’s mystery walking map and ended up creating our own bar-hopping adventure
We eat 13 of the most highly recommended sushi items at Sushiro and pick the best of the best
Pokémon’s Ash FINALLY wins a Pokémon tournament championship!
New Japanese KitKat flavour, Sugar Butter Tree, is like cracking a chocolate tree branch
Record number of foreign children in Japan need help understanding Japanese in school
Man arrested for throwing dog at police officer in Japan
10 times to avoid traveling in Japan in 2026
Our 52-year-old pole dancing reporter shares his tips for achieving your New Year’s exercise goal
Starbucks Japan releases new Frappuccino and latte for Valentine’s Day
Ramen restaurant’s English menu prices are nearly double its Japanese ones, denies discriminating
Umamusume anime girl plushie recalled for having parts she absolutely should not have【Pics】
Princess Mononoke magnets return just in time to treat yourself to awesome anime decorations
Top Japanese cosplayer Enako returns to Comiket after 6 years, creates mayhem with admirers
Giant hotel rooms in Osaka reflect the new non-niche face of travel in Japan.
We ate sushi made from Japan’s most expensive tuna ever【Taste test】
Japanese beef bowl chain Sukiya’s 2026 Smile Box lucky bag basically pays for itself
Starbucks Japan ready to get Year of the Horse started with adorable drinkware and plushies【Pics】
7-Eleven Japan starts new temporary luggage storage service in over 300 branches
Disillusionment at Tsukiji’s tourist-target prices led us to a great ramen restaurant in Tokyo
Starbucks teams up with 166-year-old Kyoto doll maker for Year of the Horse decorations【Photos】
Tokyo’s Tsukiji sushi neighborhood asks tour groups to stay away for the rest of the month
Japan may add Japanese language proficiency, lifestyle classes to permanent foreign resident requirements
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
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
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
Starbucks Japan reveals new sakura drinkware collection, inspired by evening cherry blossoms
Updated cherry blossom forecast shows extra-long sakura season for Japan this year
Human washing machine pods coming to Japanese hotels【Photos】
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”
Leave a Reply