# SumXMinus – Negative Math

> Train math with negatives

Canonical page: [https://chrome-stats.com/d/id6480327347](https://chrome-stats.com/d/id6480327347)

## Overview

- **ID:** `id6480327347`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Katsuhiko Yao
- **Category:** Education
- **Version:** 2.1.1
- **Last updated:** 2026-06-23
- **First published:** 2024-04-08
- **Size:** 32 MB
- **Data as of:** 2026-09-23
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/sumxminus-negative-math/id6480327347)
- **Website:** [https://vitoyaokatsukatsu.com](https://vitoyaokatsukatsu.com/)
- **Privacy policy:** [https://github.com/vitoyaokatsu/AddToX](https://github.com/vitoyaokatsu/AddToX)

## Description

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

## Rankings

- #2,156,833 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6480327347)