Answer:
just drop the decimal.Put the numbers in a vertical column, aligning the decimal points. Add each column of digits, starting on the right and working left. If the sum of a column is more than ten, "carry" digits to the next column on the left. Place the decimal point in the answer directly below the decimal points in the terms.
Step-by-step explanation:
10.3
+10.7
_____
21.0
