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Express the product of 0.00043 and 2000 in standard form.

Mathematics
JAMB 2014
Express the product of 0.00043 and 2000 in standard form.
  • A. 8.6 x 10-3
  • B. 8.3 x 10-2
  • C. 8.6 x 10-1
  • D. 8.6 x 10
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Correct Answer: Option C
Explanation
0.00043 x 2000

= 43 x 10-5 x 2 x 103

= 43 x 2 x 10-5+3

= 86 x 10-2

= 8.6 x 101 x 10-2

= 8.6 x 10-1

There is an explanation video available below.

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Explanation Video

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