Aufrufe
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Math Speed Test | Human Calculator Challenge
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The 14-Year-Old Human Calculator - Guinness World Records
2:45
How to Play Math Dice - Classic Rules
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How to Calculate Faster than a Calculator - Mental Math #1
4:52
The Sum Game
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Impossible Challenge: Teenagers mentally calculate 100 3-digit numbers in seconds
0:29
EAI Education Math Stacks Addition & Subtraction Game: Grades 1-2
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Active Maths Games
