Challenge: Can you solve this math problem for middle schoolers – without a calculator?
Classic brain training methods are perhaps puzzles like crosswords or sudoku, but I have recently become more attracted to the type of challenge you’ll see below.
These puzzles have been flooding the web lately, probably because they are really fun!
These are old classic mathematical problems. When you were in middle or high school.
These math problems are more fun when you find yourself trying to remember the math you learned as a child.
Can you figure out the correct solution?
Here is the challenge, in the picture below.
At the top of the picture, we see the task and then four possible answers.
Which solution do you think is the correct one?
How did you come up with it?
Take your time and think about it to find the correct solution.
Done? Below you can check if you picked the right number!
A
B
C
The correct answer
The correct answer is B: 12.
Why is 12 the correct answer?
Well, if you remember from your school days, according to the order of operations, you do multiplication before addition and subtraction, so you start by solving 3 x 3, which results in 9.
Then we are left with a simpler math problem: 3 + 9 – 3 + 3
The answer is therefore 12.
Did you pick the correct number? Congratulations!
Top 10 Most Dangerous Beaches in the World
Hawaii’s Kilauea Hawaii is well-known for its magnificent beaches, huge waves, and ideal weather for tanning, but it’s not without its risks. Hawaii is home to many volcanoes, the most active of which is Mt. Kilauea.
Kilauea beach has black sand due to volcanic ash, and although it’s a great spot to visit, there’s always a chance of the volcano erupting.
Mexico’s Playa Zipolite #2
Even though the moniker implies that this is the “beach of the dead,” a lot of people still come here each year, despite this warning.
3 Australia’s Fraser Island
Unfortunately, because of the hazardous jellyfish and sharks that inhabit the waters, Fraser Island is a paradise that is off-limits to humans. The island is home to some of the deadliest spiders in the world as well as a few huge crocodiles, so the beach is equally perilous.
4 South Africa’s Gansbaai
5 County of Volusia, Florida
6 India’s Chowpatty Beach
7 Bikini Atoll, US Islands of MarshallThe waters are teeming with sharks, and from 1946 until 1958, the area served as a nuclear weapons test site.On the islands, some 20 nuclear bombs were detonated, causing radioactive fallout. After all, the location has been deemed safe by the authorities.
Russia’s Schitovaya Bukhta 8Although Schitovaya Bukhta is renowned as one of the best places in the world for surfing, it is also home to a number of military installations.
Antarctica’s 9 Heard Island
10 Andaman Islands’ North Sentinel Island
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