Subtract 6.7 x 10-3 from 6.6 x 10-2 and express the answer in scientific notation.

Name: Subtract 6.7 x 10-3 from 6.6 x 10-2 and express the answer in scientific notation.
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Question

Quizplus · Accepted Answer

To subtract numbers in scientific notation, we need to have the same exponent. In this case, we can convert 6.7 x 10^-3 to 0.0067 x 10^-2 and then subtract:

6.6 x 10^-2 - 0.0067 x 10^-2 = 6.593 x 10^-2

Since 6.593 is between 1 and 10, we can express the answer in scientific notation as:

Answer: B) 5.9 x 10^-2