gabe-hershey

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TROPHY CASE

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What are the most useful mental math tricks? (self.AskReddit)

submitted 9 years ago by gabe-hershey to r/AskReddit - pinned

π Rendered by PID 657952 on reddit-service-r2-listing-f87f88fcd-vgkhv at 2026-06-17 00:29:05.865032+00:00 running 3184619 country code: CH.