流水算の超基本!【中学受験・spi・公務員試験対策】(流水算1基本編)

2022 9:04
Synopsis
川の流れの速さを考える流水算です。速さの計算は苦手にしている生徒が多いところ。基礎からしっかり確認しよう! 授業の ...
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