Addition & Subtraction of Decimal Numbers
Decimal numbers are added and subtracted similar to whole numbers. However, it is necessary to align the decimal points above one another prior to adding (or subtracting). This is similar to aligning digits by units (e.g., ones, tens) prior to adding (or subtracting) whole numbers.
Example #1:
36.023 + 6.1 = ?
Solution #1:
36.023
+ 6.100
42.123
Example #2:
Solution #1:
36.023
+ 6.100
42.123
Example #2:
7.98653 − 0.72 = ?
Solution #2: