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The difference is  \ \

                         (Product of two same sign is positive)      

Rewrite the expression

Place value chart for and 7.5.

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

Annex zero to align the numbers.

First find the difference of the tenths digit.

Notice that it is not possible to subtract 9 tenths from 5 tenths, so 1 unit must be borrowed from ones column.

The difference of the tenths digit =.

Next find the addition of the ones digit.

The difference of the ones digit =.

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The difference is 4.6.

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