The expression is

Place value chart for and

Line up the decimal points and draw a line below the numbers.

First find the sum of the tenths digit.

The sum of the tenths digit .

The sum is 10, so carry digits to the next column on the left

Next find the difference of the ones digit.

The difference of the ones digit =.

Next find the difference of the ones digit.

The difference of the ones digit =.

The amount left with Calvin is $13.25.