![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The expression is ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=30ca2674b9da2073cc4786f054dd686d.png\")
Place value chart for 9.9 and 5.4.
\ ![\"\"](\"http://www.mathskey.com/userfiles/image/Library/Place_Value_Chart.gif\")
| \
\ | \
\
\ | \
\
\ | \
\
9 \ | \
\
9 \ | \
\
\ | \
\
\ | \
| \
\ | \
\
\ | \
\
\ | \
\
5 \ | \
\
4 \ | \
\
\ | \
\
\ | \
![\"Text](\"file:///C:%5CDOCUME%7E1%5Craj%5CLOCALS%7E1%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_image011.gif\")
Line up the decimal points and draw a line below the numbers.
\ ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=50129863a0ddc38489505fe48e869b55.png\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
First find the difference of the tenths digit.
\The difference of the tenths digit, ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1fc2c11d5069e4a33f9df18823b30a84.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5c52d172805c6ae1fb0a470a400c1dc5.png\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step3.JPG\")
Next find the difference of the ones digit.
\The difference of the ones digit, ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=808d8221263a6206ebd2fd4e25b0a9f4.png\")
. \ \
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8a6633f2a69c586f9377461ef01caa1c.png\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The difference of is 4.5.