Evaluate the sum S = (4.998 10^ 2 ) + (5.02 10^ 2 ) + (7.1 10^ 1 )

PHYSICS · Subjective · CBSE · Physics · Units and Measurements · Units and Measurements

Problem

Evaluate the sum S=(4.998×102)+(5.02×102)+(7.1×101).S = (4.998\times10^{2}) + (5.02\times10^{2}) + (7.1\times10^{1}). a) Obtain the unrounded result in scientific notation. b) Determine the correct place to which the result must be rounded, stating the rule you apply. c) Perform the rounding and write the final answer in scientific notation, commenting explicitly on how the rounding changes the exponent of ten (if it does). (d) State the order of magnitude of the rounded value of SS.

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