[tex]\begin{gathered} 11. \\ 79.1+32.4=111.5=112 \\ 12. \\ 788.9-572=216.9=217 \\ 13. \\ 837+488.21=1325.12=1325 \end{gathered}[/tex][tex]\begin{gathered} 14. \\ 418.5-23.7=394.8=395 \\ 15. \\ 2.9+3.9=6.8=7 \end{gathered}[/tex]
16.
$12.99 - $3.95 = $9.04
[tex]\begin{gathered} 17. \\ 8.1+3.7+7.9=19.7=20 \\ 18. \\ 3.8+4.1+3.3=11.2=11 \end{gathered}[/tex]
