Treebeard's Stumper 8 May 98

A Calculator Trick

Today is the 15th Dunn Middle School Science Fair! So here's a calculator trick that uses your age as well as your address (or zip code).

	1) Enter your address	93441
	2) Double it	186882
	3) Add 5	186887
	4) Multiply by 50	9344350
	5) Add your age (here 15)	9344365
	6) Add days in a year (365)	9344730
	7) Subtract 615	9344115

There's your address and age again, combined as one number! Why does this work?

Answer

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