Recommended quizzes

How many can you solve? Brain-flexing math riddle quiz

10 years as a kindergarten teacher / elementary school teacher / junior and senior high school teacher / childminderkepiko
Graduated from Kunitachi College of Music, Faculty of Music (now: Department of Music Culture and Education, Early Childhood Music Education major). In elementary school, my homeroom teacher was Jun Kusaba, a game researcher. After graduating from university, I worked as a kindergarten teacher for 10 years and as an after-school childcare instructor for 7 years, then took a position as a music teacher at an international school in Singapore. In addition to music education, I engaged in activities that introduced Japanese culture, traditional games, and recreational activities, working with many children. Later, through freelance writing, planning, and editing at Shogakukan, I met many delightful adults and experienced the joy of communicating and sharing. Drawing on the perspective cultivated in the field of education and my experience as an editor, I provide practical information with an emphasis on both input and output, mainly in areas related to music and children. My hobbies include instruments, singing, handicrafts, toys, drawing, traditional games, the outdoors, and books. My special skill is spinning-top tricks.
Deputy Editor of RAG MUSICsasashina
Deputy Editor of RAG MUSIC. JFC-certified fact-checker. I’m Sasashina, a mom currently raising an elementary schooler and a preschooler. During my student years at Kyoto College of Science and Technology, I studied a wide range of fields including sound, lighting, and video technology, building a foundation in comprehensive stage production and creative expression. After graduation, I joined a music production company, where I still work, consistently building experience in production and engaging in a variety of music-centered tasks. Currently, I mainly handle articles for children, drawing on what I’ve learned about parenting and what I feel and discover through daily interactions with my kids. I hope my work can be of help to you, even in a small way!

Math is truly fascinating! It’s not just about calculation drills—there are rules and puzzles you can use in everyday life hidden within it.

Here, we’ve gathered math quizzes that nurture children’s thinking skills and number-based riddles that spark inspiration, all designed to make learning fun.

From intuitive, illustration-based questions to logical problems where you fill in the blanks with numbers, we’ll share the full appeal of math.

There might even be some problems that adults surprisingly can’t solve.

Gather the whole family and dive in together with excitement!

How many can you solve? Brain-flexing math riddle quiz (41–50)

Calculation Quiz!! Derive the answer using mental math

Calculation Quiz!! Find the answer with mental math [Super Mario Maker gameplay]

Calculation Quiz!! Derive the answer using mental math

These are arithmetic problems involving addition, subtraction, multiplication, and division, but solving them mentally is a bit challenging.

The background is a Mario-style game, making it enjoyable in a gamified way.

You might end up being more interested in how the game unfolds than in the calculations themselves.

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Three entrance exam problems from a highly selective elementary school

[Entrance Exam Question for Highly Competitive Elementary Schools] Can you solve this?

Three entrance exam problems from a highly selective elementary school

This is a quiz that compiles entrance exam questions from ultra-competitive elementary schools.

They are word problems, so even the math questions all require strong reading comprehension.

After checking your answers, there are careful explanations, but they’re quite complex and can be confusing.

Train both your ability to calculate mathematical formulas and your Japanese language skills to understand the problems.

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What is the area of the isosceles triangle?

[Even Elementary Schoolers Can Solve It!] What Is the Area of an Isosceles Triangle? Job Entrance Exams at Famous Companies, IQ Tests, Brain Training, Brain Teasers, Logic Quiz

What is the area of the isosceles triangle?

A question that always appears on tests: finding the area of an isosceles triangle! When the height is unknown, we usually use the Pythagorean theorem to find the area, right? But this problem says to find the area without using the Pythagorean theorem.

Looking closely, we don’t even know the length of the base…

Elementary school students who are good at math, how would you solve it? The key is to slightly shift the figure and draw an auxiliary line, then use the triangles formed to determine the height.

If you can solve it with just this hint, that’s amazing!

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In conclusion

How was it? The charm of arithmetic isn’t just about calculation skills.

Try tackling geometric brainteasers, puzzling over riddles that use formulas, or hunting for math quizzes hidden in everyday life.

Even adults who struggled with it in elementary school may find their interest sparked by approaching it in a playful way.

Open the door to arithmetic—enjoy it while nurturing your thinking skills.

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In producing this article

Editorial Policy

Carefully selected mainly from riddles and quizzes about math for elementary school students, referencing multiple educational websites and video platforms. We prioritize fun, clarity, and learning value—focusing on activities that children have actually enjoyed and engaged with.

Kepiko (10 years as a kindergarten teacher / elementary school teacher / junior and senior high school teacher / childminder)

Sasashina (Deputy Editor, RAG MUSIC)

[Evidence]

[About the order of publication]

Based on the editorial team’s research results, the final decision also takes into account the total number of your “Rank Up” and “Rank Down” button presses.

[Update History]

2025/9/14: Added and updated two reviews.
Aug 7, 2025: Updated the entire article.
2025/5/21: Added/updated one review.
April 16, 2025: Added/updated one review.
2023/12/15: Added/updated one review.
December 13, 2023: Added and updated 15 reviews and refreshed the entire article.
April 14, 2021: Added/updated one review.
January 4, 2021: Added/updated one review.
March 27, 2020: Added/updated six reviews.
Added/updated 10 reviews on 2018/11/1.
Added/updated reviews for 10 items on 2018/6/18.
June 1, 2018: Published the article.