Résous ces exercices

$$
\frac{12,5}{5}
$$

$$
12 \div 5 = 2 \text{ with a remainder of } 2
$$
$$
25 \div 5 = 5
$$
So, $12,5 \div 5 = 2,5$.  
The result is $\boxed{2,5}$.

$$
\begin{array}{r}
12,5 \\
+ \quad 5,0 \\
\hline
\end{array}
$$

$$
\begin{array}{r}
12,5 \\
+ \quad 5,0 \\
\hline
\mathbf{17,5} \\
\end{array}
$$
The result is $\boxed{17,5}$.

$$
\begin{array}{r}
12,5 \\
- \quad 5,0 \\
\hline
\end{array}
$$

$$
\begin{array}{r}
12,5 \\
- \quad 5,0 \\
\hline
\mathbf{7,5} \\
\end{array}
$$
The result is $\boxed{7,5}$.

$$
12,5 \times 5
$$

$$
\begin{array}{r}
12,5 \\
\times \quad 5 \\
\hline
\mathbf{62,5} \\
\end{array}
$$
The result is $\boxed{62,5}$.