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The Pi Song (150 Decimal Places) - YouTube
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Nerd Out On Pi Day With These Pi Day Celebration Ideas & Trivia
How Many Decimals of Pi Do We Really Need? - Edu News | NASA/JPL Edu
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150 digits of pi(π) - it's easy as pie - YouTube
Johnna Riley on Twitter: "So impressed with Mrs. Woodard's 5th graders at Echo Lake today as they celebrated Pi Day (3.14) with students who could say 50, 55, 60 and 150 digits