Express 96,342 m using 2 significant figures. A) 9.60 × 10⁴ m B) 9.6 × 10⁴ m C) 9.60 × 10^-4 m D) 9.6 × 10^-4 m E) 96000. m

Question

Quizplus · Accepted Answer

When expressing a number to 2 significant figures, we round off to the second digit unless the third digit is 5 or greater, in which case we round up. In this case, the third digit is 3, so we round down to 9.6. The rest of the digits are insignificant and can be expressed using scientific notation, so the answer is 9.6 × 10^4 m, which is option B.

Express 96,342 M Using 2 Significant Figures