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Evaluate 1.25 × 10\(^2\) × 0.125 × 10\(^3\) × 12.5 × 10\(^{-4}\) leaving your answer in standard...

Mathematics
NECO 2002

Evaluate 1.25 × 10\(^2\) × 0.125 × 10\(^3\) × 12.5 × 10\(^{-4}\) leaving your answer in standard form

  • A. 1.995 × 103
  • B. 1.95 × 102
  • C. 1.95 × 101
  • D. 1.95 × 10-2
  • E. 1.95 × 10-3
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Correct Answer: Option C
Explanation

Where 1.25 × 10\(^2\) = 125

0.125 × 10\(^3\) = 125

12.5 × 10\(^{-4}\) = 0.00125

:  125 x 125 x 0.00125

= 19.53125 or 1.95 x 10\(^1\)

 


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