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 ...

break down (partition) a number using your understanding of place value recall times-tables up to 9 x 9 multiply by multiples of powers of ten Multiply each of these numbers by the 1-digit number and ...

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