Ever wanted to impress everyone by solving complex multiplication problems in your head, without needing a pencil or paper? It's not magic; it's mental math—a superpower you can learn! This article is ...

It's possible to solve some multiplication problems in your head. But sometimes it can help to use other methods instead. These include using visual aids, such as an array or place counters, or by ...

こんにちは！「100日後にそろばん完全マスター！」の主です。 Youtube37日目の動画「暗算6級 2桁×1桁のかけ暗算」の内容を簡単に解説します。 第二章のそろばん10.9級編のかけ算のやり方をマスターしていれば、2桁×1桁のかけ暗算の計算もスムーズにできる ...

こんにちは！「100日後にそろばん完全マスター！」の主です。 Youtube12日目の動画「2ケタ×1ケタのかけ算のやり方①」の内容を簡単に解説します。 パート①は、九九に「が」という言葉がつかない時のかけ算のやり方です。 ちなみに、速く答えを出せる「両 ...

Mastering double-digit multiplication is an essential skill in mathematics. It may seem challenging at first, but with practice and the right methods, it can be easily accomplished. In this article, ...

David Harvey receives funding from the Australian Research Council. Around 1956, the famous Soviet mathematician Andrey Kolmogorov conjectured that this is the best possible way to multiply two ...

Methods similar to this go back thousands of years, at least to the ancient Sumerians and Egyptians. But is this really the best way to multiply two big numbers together? Around 1956, the famous ...

When you multiply a 3-digit number by a 1-digit number, the best way to do this without a calculator is to use short multiplication. This is how you would use short multiplication to find out the ...