MathXplosion

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MathXplosion: Pick a Block of Dates, Any Block
Pick a Block of Dates, Any Block
ABC Me  |  October 22, 2018

A trick you can do by calculating the sum of a three by three block of dates on a calendar without using a calculator.

A trick you can do by calculating the sum of a three by three block of dates on a calendar without using a calculator.

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