ホシオの算数クエスト 2年

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About this app

🌊 A math drill RPG for 2nd graders: "Hoshio's Math Quest 2nd Grade"

The main character is Hoshio, a light blue whale who jumps into the world of math.

Solve math problems with multiple-choice quizzes and master 2nd-grade math with Hoshio!

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■ Includes all 21 units and over 4,200 questions from the textbook
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【Numbers and Calculations】
 ・Numbers up to 1000 (Place value, reading and writing, size)
 ・Addition (without carrying/with carrying)
 ・3-digit addition
 ・Subtraction (without borrowing/with borrowing)
 ・3-digit subtraction
 ・Meaning of multiplication (groups of the same number)
 ・Multiplication tables (1-5 times / 6-9 times)
 ・Multiplication word problems

【Geometry】
 ・Triangles and quadrilaterals
 ・Square, rectangle, right triangle
 ・Box shapes (faces, sides, vertices)

【Measurement】
 ・Length (cm and mm/m and (cm)
 • Volume (mL, dL, L)
 • Time (How to read a clock)
 • Elapsed time

【Data Utilization】
 • Tables and bar graphs

【Other】
 • Simple fractions (1/2, 1/4)

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■ 3 Ways to Play
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✏️ Practice Mode
A random challenge of 5 questions that you can try any number of times a day.

🏆 Main Mode
Once a day, answer 5 questions correctly in a row to pass!
Collect bronze, silver, and gold badges.

👾 Monster Battle
If you earn a silver medal or higher, you can challenge the boss monster of that unit.
The calculation is solved in the steps of "units place → carrying over → tens place → adding together".
A full-fledged intermediate calculation battle. If you get it right on the first try (complete defeat), the monster will be added to your collection.

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■ Features of Hoshio
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🔇 Completely Offline
Runs smoothly without an internet connection.

💰 Completely Free
No charges, subscriptions, or paid items whatsoever.

📵 No Ads
No ads will appear during your studies.

🛡️ No Personal Information Required
No account registration required. You will not need to enter your name, email address, or any other personal information.

🎵 With Sound Effects
Successful/incorrect answers and result announcements help you maintain focus naturally.

📖 Learning History
Solved problems, accuracy rate, acquired badges, and monster encyclopedia are saved on your device.

(No data will be sent outside of your device)

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■ Recommended for:
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• Second-grade elementary school students

• Those who want to review all of the second-grade material before entering third grade

• Parents who want their children to use this with peace of mind

• Those who feel that textbooks alone do not provide enough practice

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"Let's have fun and become good at math with Hoshio-kun!"

Target age: 13 years and older
Updated on
Jul 3, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Device or other IDs
No data collected
Learn more about how developers declare collection
Data is encrypted in transit

What’s new

🌊 リワード動画広告の追加と対象年齢の見直しに伴うアップデート

📱 動画広告があります
🛡️ アカウント登録・個人情報の収集なし・アプリ内課金なし

対象年齢: 13歳以上(保護者と一緒にご利用ください)