Question

Fill in the blanks:

$7\mathrm{kg}15\mathrm{g}=...........\mathrm{kg}$​

Answer 1

1 kg = 1000 g
$\Rightarrow 1\mathrm{g}=\frac{1}{1000}\mathrm{kg}$


$$\begin{gathered} 7\mathrm{kg}15\mathrm{g}=7\mathrm{kg}+\frac{15}{1000}\mathrm{kg} \\ =7\mathrm{kg}+0.015\mathrm{kg} \\ =7.015\mathrm{kg} \end{gathered}$$

Thus, $7\mathrm{kg}15\mathrm{g}=\underline{7.015}\mathrm{kg}$​