์์ฐ ํ์ต (Learn Mental Math)
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About this app
What if you could calculate quickly and accurately without a calculator?
The secret to mental arithmetic is simplifying complex numbers. Anyone can become proficient in mental calculation by avoiding carrying over and borrowing, and by minimizing the amount of information to remember.
Learn Mental Math is not just a simple repetitive drill app. For each topic, it explains the principles behind the calculations and visualizes the actual mental calculation process through step-by-step animations.
๐ Included Topics (Arithmetic Operations)
Complement of 10s
Subtraction from 100 / 1000 / 10000
Adding by Passing (97+35 โ 100+32)
Subtracting Together
Multiplying the Larger Number by 2 (Starting with the Lead!)
Multiplying Numbers Ending in 5 and Even Numbers
Multiplying by 25
Multiplying by 99
Multiplying by 33
...More diverse topics to be added in the future...
โจ Key Features
Explanations of calculation principles and examples for each topic
Step-by-step explanation animations showing the mental calculation process
Saving problem-solving records and accuracy statistics
Mastery Judgment System (Last 10 attempts, overall average under 15 seconds)
Advertisement speed adjustable
Backup and restore solution history
100% Free ยท No Ads ยท No In-App Purchases
๐ Supported Languages
Korean ยท English ยท Japanese ยท Chinese (Simplified) ยท Chinese (Traditional) ยท German ยท Spanish ยท Portuguรชs ยท Franรงais
๐ A Message from the Creator
Hello, this is CommonMathTeacher. I teach mathematics in South Korea, and I created this app using Vive Coding with Claude Sonnet 4.6 in my spare time while taking care of my two daughters.
As we all live through a turbulent era, we harbor both hope and worry about the future. I would be happy if this app could be of some small help in maintaining and further illuminating your individual intellectual abilities and potential.
โ CommonMathTeacher
The secret to mental arithmetic is simplifying complex numbers. Anyone can become proficient in mental calculation by avoiding carrying over and borrowing, and by minimizing the amount of information to remember.
Learn Mental Math is not just a simple repetitive drill app. For each topic, it explains the principles behind the calculations and visualizes the actual mental calculation process through step-by-step animations.
๐ Included Topics (Arithmetic Operations)
Complement of 10s
Subtraction from 100 / 1000 / 10000
Adding by Passing (97+35 โ 100+32)
Subtracting Together
Multiplying the Larger Number by 2 (Starting with the Lead!)
Multiplying Numbers Ending in 5 and Even Numbers
Multiplying by 25
Multiplying by 99
Multiplying by 33
...More diverse topics to be added in the future...
โจ Key Features
Explanations of calculation principles and examples for each topic
Step-by-step explanation animations showing the mental calculation process
Saving problem-solving records and accuracy statistics
Mastery Judgment System (Last 10 attempts, overall average under 15 seconds)
Advertisement speed adjustable
Backup and restore solution history
100% Free ยท No Ads ยท No In-App Purchases
๐ Supported Languages
Korean ยท English ยท Japanese ยท Chinese (Simplified) ยท Chinese (Traditional) ยท German ยท Spanish ยท Portuguรชs ยท Franรงais
๐ A Message from the Creator
Hello, this is CommonMathTeacher. I teach mathematics in South Korea, and I created this app using Vive Coding with Claude Sonnet 4.6 in my spare time while taking care of my two daughters.
As we all live through a turbulent era, we harbor both hope and worry about the future. I would be happy if this app could be of some small help in maintaining and further illuminating your individual intellectual abilities and potential.
โ CommonMathTeacher
No carrying over! An app to learn and master mental arithmetic tricks. Supports 9 languages.
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- No data shared with third partiesLearn more about how developers declare sharing
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- Committed to follow the Play Families Policy
Whatโs new
Added mental math technique and practice for two-digit multiplication
