\
The expression is 
Place value chart for 5 and 15.
\
\ \ line up the decimal points and draw a line above the numbers.
\Annex zero to align the numbers.
\
Next find the difference of the tenths digit.
\The difference of the tenths digit =
.

Next find the difference of the ones digit.
\The difference of the ones digit =
.

\
The difference is -10.
\