Question 1.CC.5: Rounding Off Select the correct value when 2.8456 m is round......

Chemistry: An Introduction to General, Organic, and Biological Chemistry [1013382]

Rounding Off
Select the correct value when 2.8456 m is rounded off to each of the following:
a. three significant figures: 2.84 m 2.85 m 2.8 m 2.90 m
b. two significant figures: 2.80 m 2.85 m 2.8 m 2.90 m

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a. To round off 2.8456 m to three significant figures, drop the final digits 56 and increase the last retained digit by 1 to give 2.85 m.
b. To round off 2.8456 m to two significant figures, drop the final digits 456 to give 2.8 m.

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