Find the product of 0.0409 and 0.0021 leaving your answer in the standard form
Question
Find the product of 0.0409 and 0.0021 leaving your answer in the standard formOptions
A) 8.6 x 10-6
B) 8.6 x 105
C) 8.6 x 10-4
D) 8.6 x 105
The correct answer is B.
Explanation:
0.0409 x 0.0021 = 409 x 10-4 x 21 x 10-4
= 409 x 21 x 10-4-4
= 8589 x 10-8
= 8.589 x 103 x 10-8
= 8.6 x 103 - 8
= 8.6 x 10-5
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0.0409 x 0.0021 = 409 x 10-4 x 21 x 10-4
= 409 x 21 x 10-4-4
= 8589 x 10-8
= 8.589 x 103 x 10-8
= 8.6 x 103 - 8
= 8.6 x 10-5