$\"\"$

The expression is $\"\"$ .

Place value chart for 2.2 and 3.8.

$\"\"$

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

Annex zero to align the numbers.

$\"\"$

Next find the sum of the tenths digit.

The sum of the tenths digit $\"\"$ .

$\"\"$

$\"\"$

Next find the sum of the ones digit.

The sum of the ones digit $\"\"$ .

$\"\"$ $\"\"$

The sum is $\"\"$ .