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MATHS HACK: Countdown's Rachel Riley MBE 💙 reveals an easy way to multiply two-digit numbers by 11. 🎬 | Dr Tom Crawford #NationalNumeracyDay

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University of Oxford

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94,245 görüntüleme • 3 yıl önce •via X (Twitter)

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Elder of Ziyon 🇮🇱3 yıl önce

@RachelRileyRR @tomrocksmaths Doesn't work when the two digits add up to higher than 10. 29*11=319.

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@RachelRileyRR @tomrocksmaths 🤯🤯🧮

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Today is #NationalNumeracyDay! 🔢 Oxford University Alumni and Countdown star Rachel Riley MBE 💙 shares her top tip for people who want to improve their maths skills. 🎬 | Dr Tom Crawford
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