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!
For a quarter of a century, a man has made his home in a cave alongside his faithful dog: Come explore what their life looks like inside this secluded retreat!
It’s remarkable that despite the conveniences of modern technology, some people still choose to use outdated tools and methods. Consider the example of a 67-year-old man who has dedicated his efforts to constructing an intricate cave system, demonstrating that age is no barrier to undertaking ambitious projects.
With limited financial means, he has poured his heart into this work, employing only simple tools like a shovel and a cart. Although he does not have a formal education, he takes pride in his craftsmanship and believes that others will recognize the quality of his work.
When he started digging in 1987, he could not have imagined that his creation would gain such fame and acclaim, adorned with a variety of artifacts on its walls. The stunning beauty of his caves, known as Ra Paulet’s caverns, makes it difficult to assign a financial value to them.
To date, he has completed 14 caves and is currently working on his 15th, which he claims will surpass all his previous efforts. For more information, check out the video below.
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