Demonstrate with fraction and exponents, why when we multiply two decimals we add the number of decimal places to position the digits correctly in the final answer. Use 1.21×1.3 for your example.

Elementary Algebra
17th Edition
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:Lynn Marecek, MaryAnne Anthony-Smith
Chapter1: Foundations
Section1.9: Properties Of Real Numbers
Problem 824E: Explain how you can multiply 4($5.97) without paper or calculator by thinking of $5.97 as 60.03 then...
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Demonstrate with fraction and exponents, why when we multiply two decimals we add the number of decimal places to position the digits correctly in the final answer. Use 1.21×1.3 for your example. 

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