Question

HELP HELP PLEASE

In 11-18. estimate each sum or difference. 14. 418.5 - 23.7 11. 79.1 + 324 13. 837 + 488.12 12. 788.9 - 572 18. 3.8 +4.1 + 3.3 15. 29+39 16. $12.99 - $3.95 17. 8.1 +3.7 + 7.9

Answer 1

`\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}`
`\begin{gathered} 14. \\ 418.5-23.7=394.8=395 \\ 15. \\ 2.9+3.9=6.8=7 \end{gathered}`

16.

$12.99 - $3.95 = $9.04

`\begin{gathered} 17. \\ 8.1+3.7+7.9=19.7=20 \\ 18. \\ 3.8+4.1+3.3=11.2=11 \end{gathered}`