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Verified Answer :

A number multiplied by a power of 10 makes the decimal point move to the right as many as there is zeroes in the power of 10: for example, 110=10, 5.5100 = 550.
In your case:

A4301 = 430.1 10 = 43.01 100 = 4.301 1000... more the decimal point goes backward, the more zeroes you add to the power of 10.
B687 = 68.7 10 = 0.687 1000 = 0.0687 10 000, if the decimal point goes beyond the last number, you add zeroes to the left before the decimal point.
CSame thing here! 56 = 5.6 10 = 0.56 100, etc..

Hope this helps! ;)

A)4301=430.1^10
B)687=68.7^10
C)56=5.6^10