A fraction calculator that shows its work
This tool doesn't just give the answer — it shows the steps the way you'd write them in a notebook: common denominator, operation, simplification. Ideal for students checking homework and parents or teachers explaining a lesson.
How to use it
- Type the numerator and denominator of the first fraction and pick an operation (+, −, ×, ÷).
- Type the second fraction; the simplified result, mixed number and decimal appear instantly.
- Review the steps and copy them if you need to.
The rules
| Operation | Rule | Example |
|---|---|---|
| Add / subtract | Use a common denominator, then add or subtract numerators | 1/2 + 1/3 = 3/6 + 2/6 = 5/6 |
| Multiply | Numerator × numerator, denominator × denominator | 2/3 × 3/4 = 6/12 = 1/2 |
| Divide | Multiply by the reciprocal of the second fraction | 1/2 ÷ 1/4 = 1/2 × 4/1 = 2 |
To simplify, divide numerator and denominator by their greatest common divisor. Negative numbers are supported.
Tip for students
Solve the exercise yourself first, then use the calculator to check. If your answer differs, compare each step to find exactly where it went wrong.