[Satisfying When Solved] Challenging Quizzes Recommended for Elementary School Students!
For all elementary school students who love quizzes, we’re introducing a whole bunch of tough questions this time!
If regular quizzes are a breeze for you and you’re looking for a new challenge, give these a try.
We’ve gathered quizzes ranging from Math Olympiad problems and entrance exam questions from competitive junior high schools to puzzle-like brainteasers and tricky riddles.
With every question, once you see the answer you’ll think, “Oh, that’s what it was!”—and maybe feel a bit frustrated—but we believe it’s a great way to discover how fun learning can be.
If you find a quiz you like, we also recommend sharing it with everyone at school.
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- [Interesting] Collection of Matchstick Quiz Problems
[Satisfying When You Get It] Challenging Riddles Recommended for Elementary School Students! (31–40)
Matchstick puzzle: Move 2 sticks to change the direction of the goldfish.

See the answer
Move the two sticks at the bottom right to make the goldfish face upward.
When we see the phrase “change direction,” we tend to assume it means “turn 180 degrees”—right to left, up to down, and so on. If someone said “either up or down is fine” for this problem, it would click right away, wouldn’t it? Still, it’s kind of curious that with just this many matchsticks, the figure can look like a goldfish.
[Math Quiz] 5-Yen Coin Savings
![[Math Quiz] 5-Yen Coin Savings](https://i.ytimg.com/vi/E2SfqU5cTnM/sddefault.jpg)
This is a 5-yen coin saving quiz that’s also effective as brain training.
In this quiz, there’s a boy who saves 5 yen every day.
Since his piggy bank was small, he would exchange coins as follows: when he had two 5-yen coins, he exchanged them for a 10-yen coin; when he had five 10-yen coins, he exchanged them for a 50-yen coin; when he had two 50-yen coins, he exchanged them for a 100-yen coin; and when he had five 100-yen coins, he exchanged them for a 500-yen coin.
Based on these conditions, let’s determine the coin amounts at specific counts.
The trick is to think in terms of the smallest possible denominations.
A brain-teaser with a 58% correct answer rate among elementary school students

This is a type of problem where you find the answer through associations.
Elementary school students love questions like these.
They learn lots of facts, enjoy showing what they know, and come to discover the fun of studying—those children, I think, tend to achieve excellent results.
I believe these kinds of problems are very effective for developing the ability to have flashes of insight.
Today is Monday. Tomorrow is Tuesday. What day is the day after tomorrow?
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♬ Slow and comical BGM(1083863) – Blanket
When trying to answer this question, wouldn’t most people say, “You’re supposed to answer Wednesday, but the trick is that the answer is Thursday!”? That’s what common sense suggests, right? In fact, if a small child answered that way, I’d be tempted to mark it correct—they’re being clever.
However, the answer is actually neither Wednesday nor Thursday.
The key to finding the answer is to focus on the word “asatte” in the problem statement.
Look closely: while “today” and “tomorrow” are written in kanji, “asatte” is written in hiragana… What does that imply?
[Arithmetic Olympiad Super-Challenge] What is the perimeter of the rectangle?
![[Arithmetic Olympiad Super-Challenge] What is the perimeter of the rectangle?](https://i.ytimg.com/vi/AzAGNc7T9j4/sddefault.jpg)
At first glance, the perimeter here looks difficult to figure out, but since the light green shape inside is a square, you can easily find the answer by setting up an equation: let the side length of the square be ○, let the part obtained by subtracting the square’s side from 12 cm be □, and the part obtained by subtracting the square’s side from 9 cm be △.
For problems that seem hard, it’s a good idea to try replacing numbers with symbols and see if you can simplify your approach.
Give it a try!
Feel Refreshed When You Solve Them! 10 Riddles

Recommended for kids and adults! Here are 10 riddle ideas that will refresh you when you solve them.
Riddles are easier to crack when you loosen up your thinking and approach them flexibly, right? This time, let’s take on riddles that feel satisfying to solve.
For example, there’s a question like: “It’s gas, but what kind of gas comes out after using the toilet?” Hints are available, but each question has a 10-second time limit! Give them a try!
5 trick questions that even kids can understand

We’ll introduce five trick questions that even children can understand.
The questions are about things like calendars and new products.
By using familiar topics, elementary school students will feel more connected and be more eager to take part in the quiz.
Encourage the kids to aim for the right answers with their flexible minds.
If it starts to feel difficult, prepare hints so everyone can enjoy it together.
These quizzes are recommended for upper elementary school students.
Try taking turns asking the questions with teachers and friends and have fun!
A quiz that 99% of people get caught by

It’s hard to arrive at the answer! Here are some ideas for quizzes that trick 99% of people.
These are riddles that most people get caught by, and to find the answer, it’s important to approach them with flexible thinking.
Try looking at them from different angles with your friends and family.
For example, there’s a question like: “You picked up a wallet someone dropped.
What should you do with the wallet you picked up?” Try thinking with an open mind!
Riddles for advanced users (if you can solve them)

Let’s develop concentration and thinking skills! Here are some ideas for riddles that are challenging even for advanced solvers.
To solve riddles, you need to think carefully and take your time, right? At first glance, the time spent thinking may seem like you’re just playing with riddles, but it’s actually a wonderful opportunity to cultivate various abilities.
This time, let’s try some advanced-level riddles.
For example, you might encounter a question like, “Which country is particular about curry roux?”
Entrance exam questions for competitive elementary schools

This is a quiz video with tough problems.
Honestly, the questions are so difficult that they’re hard to grasp, but thinking that elementary school students are solving these makes you wonder what kind of minds they have—it’s almost scary.
Moments like this make me feel that there really are people in the world who deserve to be called geniuses.
Don’t think of it as an elementary school level—give it a try!


