数学クイズ なん度？ 7.21.0

Challenge yourself with a variety of math quizzes, from basic to difficult!

This popular math quiz app has ranked 1st in educational rankings and has been featured in numerous television programs.

• Math Quiz: How Many? Try to find the angles of various plane figures! Conquer the basic problems from Stage 1 to Stage 4 and challenge yourself in the difficult Final Stage!
• Math Quiz: What's the Area? Try to find the areas of different plane figures! Clear the basic problems from Stage 1 to 6 and the advanced problems from Stage 7 to 9, then challenge yourself in the difficult Final Stage! (Rules: Calculate the area of the colored parts, 8x8 squares, with each square having an area of 1, Π represents pi (3.1415...))
• Math Quiz: How Many? Think about which number should replace the "?" in a number sequence. Clear the basic problems from Stage 1 and challenge yourself in the difficult Final Stage!

Additional Information:

• You can write calculations with your finger in the area where the problems are displayed.
• Press the "?" button to see rough hints about problem-solving approaches and basic rules. (Note: Some hints may not be available for certain problems, such as in Final Stages.) You can also attach problem images to SNS or emails to ask for help from friends.
• If you are under 12 years old, or if you are using a device owned by a school, a learning center, or a cram school, please consider purchasing "Ad Removal" in-app purchase.
  

Acknowledgments:

We would like to express our gratitude to the college students who graduated from Nada, Koyo, Tsukumon, and Kaisei High Schools for their assistance in creating the questions.

Support Site:

Due to many inquiries, we have included slightly more detailed hints for some of the questions. Please make use of them.
Support Site: http://areas.hateblo.jp/

Contacting the Developers:

If you would like to be interviewed or report any issues or bugs, please contact us through the "Inquiries" section of the app.