Which of the following numbers are written using scientific notation correctly? For those that are wrong, write the number correctly in scientific notation: a. 4.2 x 10-3 b. 6.84 c. 202 x 10-3 d. 0.026 x 10-2 e. 1 x 10-2 f. 74.5 x 105
Added by Jeffrey B.
Step 1
4.2 x 10^-3 is correct. It is already in scientific notation. b. 6.84 is not in scientific notation. The correct form would be 6.84 x 10^0. c. 202 x 10^-3 is not in scientific notation. The correct form would be 2.02 x 10^-1. Show more…
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Complete the following problems in scientific notation. Round off to the correct number of significant figures. (Chapter 2$)$ $$\begin{array}{l}{\text { a. }\left(5.31 \times 10^{-2} \mathrm{cm}\right) \times\left(2.46 \times 10^{5} \mathrm{cm}\right)} \\ {\text { b. }\left(6.42 \times 10^{-2} \mathrm{g}\right) \div\left(3.21 \times 10^{-3} \mathrm{g}\right)} \\ {\text { c. }\left(9.87 \times 10^{4} \mathrm{g}\right)-\left(6.2 \times 10^{3} \mathrm{g}\right)}\end{array}$$
Complete these problems in scientific notation. Round to the correct number of significant figures. a. $\left(5.31 \times 10^{-2} \mathrm{cm}\right) \times\left(2.46 \times 10^{5} \mathrm{cm}\right)$ b. $\left(3.78 \times 10^{3} \mathrm{m}\right) \times\left(7.21 \times 10^{2} \mathrm{m}\right)$ c. $\left(8.12 \times 10^{-3} \mathrm{m}\right) \times\left(1.14 \times 10^{-5} \mathrm{m}\right)$ d. $\left(9.33 \times 10^{4} \mathrm{mm}\right) \div\left(3.0 \times 10^{2} \mathrm{mm}\right)$ e. $\left(4.42 \times 10^{-3} \mathrm{kg}\right) \div\left(2.0 \times 10^{2} \mathrm{kg}\right)$ f. $\left(6.42 \times 10^{-2} \mathrm{g}\right) \div\left(3.21 \times 10^{-3} \mathrm{g}\right)$
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