Question

Match the number of significant figures.1. 0.0042. 10.5 * 5.13. 123004. 4.007

Answer 1

hello

to solve this problem, we need to count the number of zeros before the first non zero number

$\begin{gathered} 1.0.004= \\ 4\times10^{-3} \end{gathered}$$\begin{gathered} 2.10.5\times5.1 \\ \text{ multiply both numbers and find the resultant value} \\ 10.5\times5.1=53.55 \end{gathered}$$\begin{gathered} 3. \\ 12300=1.23\times10^4 \end{gathered}$$\begin{gathered} 5. \\ 4.007=4.0 \end{gathered}$