２桁かけ算（インド式）
Published by:
Yasuyoshi Ota
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)
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)
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App Info
- Category
- Education
- Publisher
- Yasuyoshi Ota
- Languages
- English, Japanese
- Recent release
- 2.1.3 (1 year ago )
- Released on
- Oct 3, 2010 (14 years ago )
- Also available in
- Japan, Romania, Kazakhstan, Lebanon, Mexico, Malaysia, Nigeria, Norway, New Zealand, Peru, Philippines, Poland, South Korea, Russia, Saudi Arabia, Sweden, Singapore, Thailand, Türkiye, Taiwan, United States, Vietnam, South Africa, Spain, Australia, Azerbaijan, Brazil, Chile, China, Czechia, Germany, Denmark, Algeria, Egypt, Kuwait, France, United Kingdom, Greece, Hong Kong SAR China, Hungary, Ireland, Israel, India, Italy, Austria
- Last Updated
- 3 days ago
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