![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The expression is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ce14f8f8e738073877f213fee436588d.png\")
Place value chart for 5.1 and 6.8.
\ ![\"\"](\"http://www.mathskey.com/userfiles/image/Library/Place_Value_Chart.gif\")
| \
\ | \
\
\ | \
\
\ | \
\
5 \ \ \ | \
\
1 \ | \
\
\ | \
\
\ | \
| \
\ | \
\
\ | \
\
\ | \
\
6 \ | \
\
8 \ | \
\
\ | \
\
\ | \
\
Line up the decimal points and draw a line below the numbers.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9994fb592589f57f0ee92015eb406947.png\")
\
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
First find the sum of the tenths digit.
\The sum of the tenths digit, ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e0a962b81ff5fabfaede8ffe38536ff1.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f558e1cbf0f10e1d9b3e79414c2d34b3.png\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step3.JPG\")
Next find the sum of the ones digit.
\The sum of the ones digit, ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=287c54afa668bffb47c93125dcd3021a.png\")
.
The sum is 11, so carry the tens digit to the next column on the left.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e0265d9f5853571e400a1259667fd2b5.png\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The sum of ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ce14f8f8e738073877f213fee436588d.png\")
is 11.9.