こんにちは！「100日後にそろばん完全マスター！」の主です。 Youtube54日目の動画「そろばん5級 2桁×4桁・3桁×3桁・4桁×2桁のやり方」の内容を簡単に解説します。 桁数が増えてなんだかむずかしそうと思った方、安心してください！はいてますよ ...

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 ...

こんにちは！「100日後にそろばん完全マスター！」の主です。 Youtube63日目の動画「そろばん4級 5桁×2桁・4桁×3桁・3桁×4桁のやり方」の内容を簡単に解説します。 5桁×2桁のかけ算のやり方 -How to Multiply 5-Digit × 2-Digit Numbers- noteでは、YouTube内の例題2つ目の ...

Four Wappingers elementary students are multiplying up to 384-digit numbers in school. These students, who are in the district's math enrichment program, are getting creative with math theory to solve ...

When you multiply decimals by integers (whole numbers), you can use everything you already know about multiplying multi-digit numbers. You can use written or mental methods to multiply decimals by ...