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 ...

You two made a film? Wow, impressive. Oh dear, people don’t seem to be enjoying it do they? That’s alright, we can use number columns to figure out how many people are still here. Number columns allow ...

Write the numbers in a vertical list, lining up the decimal points. If the numbers have a different amount of digits, there may be some gaps in the columns. Fill in any gaps with a zero so that each ...