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!
This man bought the home from an elderly couple who built it in the 1970s: He sees a hole in his front yard, examines it closer, and is surprised where it leads
The allure of old buildings lies not only in their physical structures but also in the historical tales they hold. While the phrase “If these walls could talk” may be a bit cliché, it sparks the imagination to envision the lives and stories embedded within those timeworn walls. As a child, I was captivated by the charm of my grandparents’ 18th-century mansion, a dwelling that had exchanged hands multiple times over the centuries.
Contemplating the lives of those who inhabited the house in the 1800s and visualizing the landscape before its construction fueled my curiosity. It’s intriguing how many individuals remain oblivious to the secrets concealed within their own homes. A similar sense of astonishment struck Simon Marks from Luton, England, when he unwittingly stumbled upon a hidden piece of history in his front yard.
Several years ago, Simon Marks discovered an unexpected feature beneath his property: a two-roomed World War II air raid shelter. The incident unfolded as Simon drove into what he initially believed to be a flowerbed, only to realize that his vehicle had descended into the concealed structure. “A large hole developed. I thought it was a sinkhole or a badly constructed garden”, recounted Simon, 37, to The Sun.
Fearful that his entire house might disappear into the unexpected void, Simon investigated further. To his surprise, he uncovered a ladder and, upon using a selfie stick to peer into the depths, identified the underground relic as a World War II air raid shelter. His father, upon seeing the images, immediately recognized the structure and informed Simon of its historical significance.
Acquiring the home from an elderly couple who had constructed it in the 1970s, Simon speculated that the previous owners must have been aware of the shelter’s existence. “The previous owner must have known it was there, and when he built the house and put a garden in, he must have filled it in”, Simon surmised. Undeterred by the unexpected discovery, he expressed a keen interest in preserving and restoring the bunker, considering it a remarkable piece of history.
Motivated by their newfound historical treasure, Simon and his father embarked on a venture to uncover the entire two-room construction, digging with buckets to reveal the structure in its entirety. The process, captured in a video showcasing the shelter and its restoration, serves as a testament to the unexpected historical gems hidden beneath the surface of our everyday lives.
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