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+1 vote
47.1k views
in Physics by (48.1k points)

Taking into account of the significant figures, what is the value of 9.99 m – 0.0099 m ? 

(1) 9.9 m 

(2) 9.9801 m 

(3) 9.98 m 

(4) 9.980 m

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1 Answer

+1 vote
by (48.5k points)

Correct answer is (3) 9.98 m

In subtraction the number of decimal places in the result should be equal to the number of decimal lesser number of decimal places.

9.99 - 0.0099 = 9.98 → 3 significant figures

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