---
title: "２桁かけ算（インド式） - Reviews, Revenue and Downloads in Japan | Apple App Store"
description: "2桁×2桁の掛け算の速解法を学ぶためのアプリです。 最小のメモ、もしくは、暗算で計算できる解法を集録しています。 これらの解法を練習することは、良い頭の体操になります。  九九さえできれば、19x19までの掛け算であれば、解法-A1だけで計算可能です。  19x17 (19+7)x10 + 9x7 = 323 (解法-A1)  58x58 ((5x5)+8)x100 + 8x8 = 3364 (解"
---

# ２桁かけ算（インド式） — Japan

![２桁かけ算（インド式） App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/f9/98/10/f9981077-693f-2eeb-dccc-841cf56e45b2/AppIcon-0-0-1x_U007emarketing-0-6-0-85-220.png/434x0w.png)

**Developer:** [Yasuyoshi Ota](https://apptail.io/developer/yasuyoshi-ota-ckT)
**Category:** Education
**Rating:** 4.0/5 (1 ratings)
**Price:** Free
**Bundle ID:** jp.hasshokukou.mathmethod
**Store:** Apple App Store
**Country:** Japan
**Version:** 2.1.6 (released 2025-10-21)
**Original Release:** 2010-10-03
**Languages:** Japanese, English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/jp/app/app/id395133470)
**AppTail Page:** [https://apptail.io/app/app-KKPe/japan](https://apptail.io/app/app-KKPe/japan)

## ２桁かけ算（インド式） Description
2桁×2桁の掛け算の速解法を学ぶためのアプリです。
最小のメモ、もしくは、暗算で計算できる解法を集録しています。
これらの解法を練習することは、良い頭の体操になります。

九九さえできれば、19x19までの掛け算であれば、解法-A1だけで計算可能です。

19x17
(19+7)x10 + 9x7 = 323 (解法-A1)

58x58
((5x5)+8)x100 + 8x8 = 3364 (解法-A6)

## ２桁かけ算（インド式） Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/f1/cf/d4/f1cfd492-0d79-38b0-9b70-6e6121ce8304/mzl.ucsmzzlm.jpg/640x960.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/a5/45/73/a54573a6-64e9-07d8-e913-8278c3bbe511/mzl.bynwuduu.jpg/640x960.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/1d/dc/4a/1ddc4aa0-648b-b6f2-c61e-d745551a129b/mzl.hhhuohid.jpg/640x960.png)

## ２桁かけ算（インド式） Rating Breakdown in Japan
- 5 stars: 0 (0%)
- 4 stars: 1 (100%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)



## ２桁かけ算（インド式） Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Japan | Education | #402 |



## ２桁かけ算（インド式） Available In
- [Japan](https://apptail.io/app/app-KKPe/japan)
- [Australia](https://apptail.io/app/app-KKPe/australia)
- [Azerbaijan](https://apptail.io/app/app-KKPe/azerbaijan)
- [Brunei](https://apptail.io/app/app-KKPe/brunei)
- [Brazil](https://apptail.io/app/app-KKPe/brazil)
- [Belarus](https://apptail.io/app/app-KKPe/belarus)
- [Canada](https://apptail.io/app/app-KKPe/canada)
- [Chile](https://apptail.io/app/app-KKPe/chile)
- [China](https://apptail.io/app/app-KKPe/china)
- [Czechia](https://apptail.io/app/app-KKPe/czechia)
- [Germany](https://apptail.io/app/app-KKPe/germany)
- [Denmark](https://apptail.io/app/app-KKPe/denmark)
- [Algeria](https://apptail.io/app/app-KKPe/algeria)
- [Egypt](https://apptail.io/app/app-KKPe/egypt)
- [Spain](https://apptail.io/app/app-KKPe/spain)
- [France](https://apptail.io/app/app-KKPe/france)
- [United Kingdom](https://apptail.io/app/app-KKPe/united-kingdom)
- [Greece](https://apptail.io/app/app-KKPe/greece)
- [Hong Kong SAR China](https://apptail.io/app/app-KKPe/hong-kong)
- [Hungary](https://apptail.io/app/app-KKPe/hungary)
- [Ireland](https://apptail.io/app/app-KKPe/ireland)
- [Israel](https://apptail.io/app/app-KKPe/israel)
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- [Kuwait](https://apptail.io/app/app-KKPe/kuwait)
- [Kazakhstan](https://apptail.io/app/app-KKPe/kazakhstan)
- [Lebanon](https://apptail.io/app/app-KKPe/lebanon)
- [Mexico](https://apptail.io/app/app-KKPe/mexico)
- [Malaysia](https://apptail.io/app/app-KKPe/malaysia)
- [Nigeria](https://apptail.io/app/app-KKPe/nigeria)
- [Norway](https://apptail.io/app/app-KKPe/norway)
- [New Zealand](https://apptail.io/app/app-KKPe/new-zealand)
- [Peru](https://apptail.io/app/app-KKPe/peru)
- [Philippines](https://apptail.io/app/app-KKPe/philippines)
- [Poland](https://apptail.io/app/app-KKPe/poland)
- [Romania](https://apptail.io/app/app-KKPe/romania)
- [Russia](https://apptail.io/app/app-KKPe/russia)
- [Saudi Arabia](https://apptail.io/app/app-KKPe/saudi-arabia)
- [Sweden](https://apptail.io/app/app-KKPe/sweden)
- [Singapore](https://apptail.io/app/app-KKPe/singapore)
- [Thailand](https://apptail.io/app/app-KKPe/thailand)
- [Türkiye](https://apptail.io/app/app-KKPe/turkey)
- [Taiwan](https://apptail.io/app/app-KKPe/taiwan)
- [United States](https://apptail.io/app/app-KKPe/united-states)
- [Vietnam](https://apptail.io/app/app-KKPe/vietnam)
- [Austria](https://apptail.io/app/app-KKPe/austria)
- [South Africa](https://apptail.io/app/app-KKPe/south-africa)

---

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