The expression is 

Place value chart for 4.25 and 0.7.

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

First find the difference of the hundredths digit.

The difference of the hundredths digit =.

Next find the difference of the tenths digit.

Notice that it is not possible to subtract 2 tenthsfrom 7 tenths, so 1 unit must be

borrowed from ones column.

The difference of the tenths digit =.

Next find the difference of the ones digit.

The difference of the ones digit =.

The difference is.