
SumXMinus – Negative Math
Train math with negatives
Only for iPhone
Free · Designed for iPhone
iPhone
Created by a Math Teacher
Train your brain in just 30 seconds.
QuickMath Series
A fast and fun way to master mental math.
Can you find the right number pairs?
Use both positive and negative numbers
to reach the target.
Example:
(-2) + (-4) = -6
(-4) + (+5) = 1
Challenge yourself and improve:
• Negative number understanding
• Mental calculation speed
• Focus and thinking skills
From upper elementary to middle school level.
QuickMath Series
• SumX – Number Pair Puzzle
• SumXMinus – Negative Number Training
• Common Divisor – Divisor Brain Training
• Exponent – Power Calculation Challenge
• Decimal Finder – Number Line Intuition
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Big update to the result screen!
• Share your score
Challenge your friends!
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Faster and easier
Train your brain and beat your best score
The developer, Katsuhiko Yao, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Katsuhiko Yao
- Size
- 31.7 MB
- Category
- Education
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © Katsuhiko Yao