1. Align the decimal points. This means that the numbers should have the same number of digits to the right of the decimal point. To do this, you may need to add zeros to the end of one or both numbers.
2. Add the significant digits. This means adding the digits from left to right, ignoring the decimal points.
3. Add the exponents. This means adding the exponents of the two numbers.
4. Normalize the result. This means that the result should have only one digit to the left of the decimal point. To do this, you may need to move the decimal point to the left or right.
5. Round the result. This means that the result should have a specified number of decimal places. To do this, you may need to round up or down.