Write the decimal as a fraction with the decimal digits over a power of 10
Count how many digits are after the decimal point
Use 10, 100, 1000, and so on as the denominator based on that count
Remove the decimal point and use that number as the numerator
Simplify the fraction by dividing the numerator and denominator by their greatest common factor
For repeating decimals, set the decimal equal to a variable and solve algebraically
For terminating decimals, the simplified fraction is the final answer