Greenwald, Morgan. “20 Tricky But Fun Grade-School Math Questions - Hard Math Problems.” Best Life, 20 Aug. 2019, bestlifeonline.com/tricky-math-questions/.
This problem shouldn’t be too difficult to solve if you play a lot of sudoku.
This problem comes straight from a standardized test given in New York in 2014.
This question comes directly from a second grader’s math homework. Yikes.
This question was used in China to identify gifted 5th graders. Supposedly, some of the smart students were able to solve this in less than one minute.
YouTuber MindYourDecisions adapted this mind-boggling math question from a similar one found on an elementary school student’s homework in China.
This problem, mathematically speaking, is very similar to one of the other ones on this list.
If you’re having trouble reading that, see here:
“Albert and Bernard just became friends with Cheryl, and they want to know when her birthday is. Cheryl gives them a list of 10 possible dates.
May 15 May 16 May 19
June 17 June 18
July 14 July 16
August 14 August 15 August 17
Cheryl then tells Albert and Bernard separately the month and the day of her birthday respectively.
Albert: I don’t know when Cheryl’s birthday is, but I know that Bernard doesn’t not know too.
Bernard: At first I don’t know when Cheryl’s birthday is, but I know now.
Albert: Then I also know when Cheryl’s birthday is.
So when is Cheryl’s birthday?”
It’s unclear why Cheryl couldn’t just tell both Albert and Bernard the month and day she was born, but that’s irrelevant to solving this problem.
This one comes from a first grader’s homework.
This problem might look easy, but a surprising number of adults are unable to solve it correctly.
5 + 5 + 5 + 5 = 555.
Try to figure out what all of the equations have in common.
When Best Life first wrote about this deceiving question, we had to ask a mathematician to explain the answer!
Adding two decimals together is easier than it looks.
… If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of the lake?
This elementary school-level problem is a little less problem solving and a little more memorization.
-15 + (-5x) = 0
You might need to ask your kids for help on this one.
Don’t forget about PEMDAS!
Finding the answer to this final question will require using fractions.
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