\text { Add } 1.95 \times 10^{-2} \text { and } 2.8 \times 10^{-3} \text {. }
Question 5.1: Add 1.95 * 10^-2 and 2.8 * 10^-3.
To add these two numbers, we make both exponents -2. Thus, 2.8 \times 10^{-3}=0.28 \times 10^{-2}. Now we can add:
\begin{array}{r}1.95 \times 10^{-2} \\+0.28 \times 10^{-2} \\\hline 2.23 \times 10^{-2}\end{array}
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