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12th grade mental math resources for ActiveInspire Flipchart

Preview of Guess Your Number Magic Trick Demonstration

Guess Your Number Magic Trick Demonstration

This is an amazing trick with numbers. Students think of a 2-digit number, perform 2 simple calculations, and find a symbol that corresponds to their numbers on a chart. The teacher picks the correct symbol. The trick is repeated two more times, and each time the teacher picks the correct symbol. The last page uses algebra to explain how the trick works.
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