Calculator Riddles - Adler, David A

Enter the number 14 on a calculator and then turn it upside down. Can you read the word "h1"? If your answer is yes, then you are ready to start solving calculator riddles. David Adler has provided 45 riddles to solve, each accompanied by a math problem. To find the answer to the riddle, solve the math problem and turn the calculator upside down.

Calculator Riddles 1996, Turtleback Books

ISBN-13: 9780613945127

Turtleback School & Library edition

Hardcover

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Calculator Riddles 1995, Holiday House, New York, NY

ISBN-13: 9780823412693

Trade paperback

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Calculator Riddles 1995, Holiday House, New York, NY

ISBN-13: 9780823411863

Hardcover

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