# 中学数学 正負の数

> Junior high math app for practicing positive and negative number calculations. (iPhone/iPad app by Manabu Narawa.)

- Source: https://appshunter.io/ios/app/id1358566610 (this page in markdown: same URL + `.md`)
- Developer: [Manabu Narawa](https://appshunter.io/developer/1027712863)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 12.0 · 14 MB
- Languages: American English
- Released: 2018-03-14
- Data updated: 2026-08-27
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/id1358566610/reviews.md

## What is 中学数学 正負の数?

中学1年生で最初に習う単元の正負の数の計算問題。

基本中の基本だからこそしっかり身につけたい分野です。計算問題はとにかく、数をこなすことで正確にミスを少なく計算できるようになります。

1000問以上の圧倒的な問題数をやりまくることで計算問題の実力をアップするためのアプリです。

解答は選択式ではなく、ソフトウェアキーボードからの入力式で分数も入力できます。
選択式に比べて手軽ではない分、実力アップに適しています。
中1の普段の勉強から、2年、3年になってからの復習や高校受験勉強の基礎としてご利用いただけます。

問題はごくごく基礎のレベル1から、難易度の高いレベル4まで、加法、減法、乗法、除法、累乗の問題それぞれとこれらの組み合わせ、四則計算、小数、分数の問題まで正負の数の計算をみっちり練習できる内容です。

## Key features

- 1000+ practice problems
- Input-based answers
- Fraction and decimal support
- Multiple difficulty levels
- Covers all operations and powers
- Suitable for review and exam prep

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/id1358566610/reviews.md

### 5/5 — まあ

*2021-04-01, version 1.0.2*

とても良いと思いますよ

### 1/5 — 反応

*2020-04-10, version 1.0.2*

反応悪すぎ

## Frequently asked questions about 中学数学 正負の数

### What is 中学数学 正負の数?

中学数学 正負の数 is an educational app designed to help junior high school students master calculations involving positive and negative numbers. It offers over 1000 practice problems with a focus on building accuracy through direct input.

### What kind of math problems does 中学数学 正負の数 cover?

The app covers a comprehensive range of positive and negative number calculations, including addition, subtraction, multiplication, division, powers, decimals, fractions, and combined operations. Problems are structured from basic to advanced difficulty levels.

### How does 中学数学 正負の数 help improve math skills?

By providing a large volume of practice problems and requiring users to input answers directly rather than selecting from options, the app aims to enhance calculation accuracy and speed. Consistent practice is key to mastering these fundamental concepts.

### Is 中学数学 正負の数 suitable for exam preparation?

Yes, the app is designed to be useful for daily study in the first year of junior high, as well as for reviewing concepts in later years and preparing for high school entrance exams. It builds a strong foundation in essential arithmetic skills.

### What devices is 中学数学 正負の数 available on?

中学数学 正負の数 is available for iPhone, iPad, and iPod devices. It is designed for iOS operating systems.

### How often is 中学数学 正負の数 updated?

The app was last updated on October 8, 2021, to version 1.2.0. While the last update was in 2021, the core functionality for practicing positive and negative numbers remains consistent.

### Does 中学数学 正負の数 have ads?

Yes, 中学数学 正負の数 contains advertisements. As it is a free application, advertisements are displayed to support its development and maintenance.

### What is the age rating for 中学数学 正負の数?

中学数学 正負の数 has an age rating of 4+. This indicates that the content is generally suitable for all ages, with the educational focus being on junior high curriculum.

## Version history (last 4 releases)

### 1.2.0 — 2021-10-08

不具合の修正。

### 1.0.2 — 2019-04-16

不具合の修正

### 1.0.1 — 2018-03-14

不具合の修正

### 1.0 — 2018-03-13

No release notes.

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All apps by Manabu Narawa: https://appshunter.io/developer/1027712863

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*