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!
One morning they saw a mysterious pit forming in their garden…
As Emma James diligently mowed the front yard with her lawnmower, an unexpected discovery halted her routine, a mysterious hole in the ground. Over the course of the day, this innocuous pit expanded steadily, reaching an unexpected depth of 2 meters. Adding to the intrigue, the hole contained a peculiar surprise, weathered, rusty steps.
Although the dimensions of the pit currently preclude any person from venturing inside, authorities harbor suspicions that the unearthed tunnel beneath the James’ property might connect to a canal concealed 35 years ago.
Seeking answers, the couple reached out to the construction company responsible for erecting their home in 1984. Unfortunately, the company could not shed light on the tunnel’s destination.
Expressing her bewilderment, Emma remarked: “It’s truly perplexing, these steps leading downward, yet no indication of their purpose or a cover to conceal them. Beneath lies a mixture of cement and rusty metal. We’re eager for someone to inspect and elucidate; I’m not comfortable leaving such an enigma in my backyard”.
Despite the local council’s assertion that the tunnel leads to a drain sealed off three decades ago, skepticism lingers with the homeowners. They remain unconvinced until an official examination is conducted. Frustratingly, despite assurances from authorities, no one has undertaken the task of a thorough investigation.
The homeowners fervently hope that another cavity won’t materialize, posing a potential hazard. Reluctantly, and in the absence of concrete answers, they’ve resorted to cautionary signs to prevent any unsuspecting individuals from stumbling into the mysterious void.
The James family remains in suspense, yearning for resolution and clarity about the clandestine underground structure that has disrupted their peaceful property.
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