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 ...

The process of multiplying three numbers together is similar to the process of multiplying two numbers, but it has one extra step. First, you multiply two of the numbers, then you multiply the third ...

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。 Youtube38日目の動画「暗算6級 3桁÷1桁&2桁÷1桁のわり暗算のやり方」の内容を簡単に解説します。 かけ暗算と違って、わり暗算はそろばんのわり算と同じやり方というわけではありません！

Multiplication of two-digit numbers and one-digit numbers: Students find it difficult to remember the answer for tables of double-digit and single-digit numbers. For this, you will require the basic ...