Question on: JAMB Mathematics - 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 Option: C
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
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