Powers: Scientific Notation

Which of the following best approximates $$0.2 \times 0.3 \times 0.4 \times 0.5$$?
Incorrect. [[snippet]]
Correct. [[snippet]] >$$0.2 \times 0.3 \times 0.4 \times 0.5$$ >$$= (2 \times 10^{-1}) \times (3 \times 10^{-1}) \times (4 \times 10^{-1}) \times (5ยท10^{-1})$$ >$$= (2 \times 3 \times 4 \times 5) \times (10^{-1} \times 10^{-1} \times 10^{-1} \times 10^{-1})$$ >$$= 120 \times 10^{-4}$$ Since this decimal in scientific form has a -4 power of 10, shift the decimal point four places to the left. >$$120 \times 10^{-4}= 0.0120 \approx 0.01$$
Incorrect. [[snippet]]
Incorrect. [[snippet]]
Incorrect. [[snippet]]
0.1
0.01
0.001
0.0001
0.00001

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