Solve each problem.

1. [tex]\(\begin{array}{r}7.59 \\ +2.09 \\ \hline\end{array}\)[/tex]

2. [tex]\(\begin{array}{r}25.90 \\ +34.80 \\ \hline\end{array}\)[/tex]

3. [tex]\(\begin{array}{r}157.8 \\ +\quad 30.4 \\ \hline\end{array}\)[/tex]

4. [tex]\(\begin{array}{r}83.041 \\ +\quad 5.226 \\ \hline\end{array}\)[/tex]

5. [tex]\(\begin{array}{r}10.42 \\ -\quad 6.01 \\ \hline\end{array}\)[/tex]

6. [tex]\(\begin{array}{r}52.99 \\ -25.00 \\ \hline\end{array}\)[/tex]

7. [tex]\(\begin{array}{r}14.07 \\ -2.88 \\ \hline\end{array}\)[/tex]

8. [tex]\(\begin{array}{r}19.99 \\ -2.88 \\ \hline\end{array}\)[/tex]

9. [tex]\(\begin{array}{r}15.08 \\ 46.09 \\ +145.73 \\ \hline\end{array}\)[/tex]

10. [tex]\(\begin{array}{r}35.33 \\ 19.38 \\ +10.94 \\ \hline\end{array}\)[/tex]

11. [tex]\(\begin{array}{r}19.44 \\ -12.70 \\ \hline\end{array}\)[/tex]

12. [tex]\(\begin{array}{r}99.421 \\ -77.025 \\ \hline\end{array}\)[/tex]