About this app
Master negative multiplication in just 1 minute a day Train your brain with fast and addictive math challenges Find the right pairs and hit the target number! A math training app developed by a professional teacher QuickMath Series Boost your calculation skills and logical thinking in just a short time Math × Brain Training Series Find number pairs and reach the target value! In this app, you can train multiplication using negative numbers. For example: (−2) × (−4) = 8 (−4) × (+5) = −20 Find the correct pairs from combinations of positive and negative numbers to match the target value. Learn while playing: • Understand negative numbers • Improve mental math skills • Increase calculation speed Suitable for a wide range of learners, from advanced elementary students to middle school math practice. QuickMath Series • SumX – number pair puzzle • SumXMinus – negative number training • Common Divisor – divisor brain training • Exponent – power calculation challenge
Latest release
What’s New
Improved the Result View layout on certain tablet devices, including the iPad Air 11-inch. * Fixed layout issues on the result screen * Improved visibility of scores and buttons * Enhanced overall user experience
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 12, 2026 · 5:28 PM Free