Do arithmetic with fractions and mixed numbers, with steps.
Use a common denominator, add the numerators, then simplify. 1½ + ¾ = 9/4 = 2¼.
This calculator adds, subtracts, multiplies and divides fractions and mixed numbers, always reducing the answer to lowest terms and showing it as a fraction, mixed number, decimal and percentage with the steps listed. A second tool simplifies any fraction and converts decimals such as 0.375 to fractions.
Denominators are matched with the LCM and answers reduced with the GCF — see the LCM Calculator and GCF Calculator. For ratios use the Ratio Calculator and for percentages the Percentage Calculator.
The calculator applies the standard method step by step.
| Item | Value |
|---|---|
| Simplified fraction | 9/4 |
| Mixed number | 2 1/4 |
| Decimal | 2.25 |
| Percent | 225% |
| Step | Working |
|---|---|
| Common denominator | LCM(2, 4) = 4 |
| Rewrite the fractions | 6/4 + 3/4 |
| Combine the numerators | 9/4 |
| Simplify | 9/4 → 9/4 (already simplest) |
| Operation | Answer |
|---|---|
| 1/2 + 1/3 | 5/6 |
| 1/2 − 1/3 | 1/6 |
| 1/2 × 1/3 | 1/6 |
| 1/2 ÷ 1/3 | 3/2 |
| 1½ + ¾ | 9/4 |
Find a common denominator, convert both fractions, add the numerators and simplify. 1/2 + 1/3 = 3/6 + 2/6 = 5/6.
Multiply the numerators together and the denominators together, then simplify.
Flip the second fraction (take its reciprocal) and multiply.
Divide the numerator and denominator by their greatest common factor. 18/24 ÷ 6 = 3/4.
Write the digits over a power of ten and simplify: 0.375 = 375/1000 = 3/8.
A whole number plus a fraction, like 2¼, which equals the improper fraction 9/4.
It uses the standard method: a/b + c/d = (ad + bc) ÷ bd a/b × c/d = ac ÷ bd a/b ÷ c/d = ad ÷ bc The full working and a worked example are shown on this page.
Decimal results use standard double-precision arithmetic (about 15–16 significant digits). Tools that work with whole numbers — big numbers, factors, bases, combinations — use exact integer arithmetic, so no digits are lost.
Yes for checking your work and learning the method. The steps and formula are shown so you can understand the answer, but follow your teacher's rules about calculators in exams.
No. Everything is calculated in your browser and nothing you enter is uploaded or saved.
