Fraction Rules
| Operation | Rule |
|---|---|
| Add/Subtract | Find common denominator, then add/subtract numerators |
| Multiply | Multiply numerators, multiply denominators |
| Divide | Multiply by the reciprocal of the second fraction |
| Simplify | Divide both by their GCD |
Frequently Asked Questions
Find the least common denominator (LCD), convert both fractions to that denominator, then add the numerators. Example: 1/2 + 1/3. LCD = 6. Convert: 3/6 + 2/6 = 5/6.
Flip the second fraction (take its reciprocal) and multiply. Example: (1/2) / (3/4) = (1/2) x (4/3) = 4/6 = 2/3.