Question

Express $\frac{1.5\times {10}^6}{2.5\times {10}^{-4}}$ in the standard form.

Answer 1

$\frac{1.5\times {10}^6}{2.5\times {10}^{-4}}$

$=\frac{15\times {10}^6}{25\times {10}^{-4}}$

$=\frac{3}{5}\times {10}^{6+4}$

$=\frac{3}{5}\times {10}^{10}$

$=0.6\times {10}^{10}$

$\therefore \frac{1.5\times {10}^6}{2.5\times {10}^{-4}}=0.6\times {10}^{10}$