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!
I Came Home to My Husband and His Ex Digging My Garden – What They Hid Years Ago Made Me Pale
This story captures an intense moment of betrayal, misunderstanding, and the tough emotions tied to moving on from the past in a relationship. Margaret’s experience highlights how fragile trust can be and how challenging it is to come face-to-face with unresolved history, especially when it’s physically unburied in front of her. Her reaction—burning the mementos of Martin and Janet’s past—shows her need for a clear boundary and a fresh start.
It’s also a reflection on the complexities of relationships: even the “perfect” partner may come with a history that still feels unresolved. This story brings up so many themes—trust, communication, and the messy aftermath of relationships that aren’t fully left in the past. Margaret’s choice to give herself space and set clear limits with Martin is powerful and relatable, showing the strength to handle hurt feelings without impulsive decisions on the future.
If you were in Margaret’s place, would you have done the same, or do you think there’s a different way to process and rebuild trust?
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