Fraction Calculator – Add, Subtract, Multiply, Divide

To add or subtract fractions, use a common denominator: 1/2 + 1/3 = 3/6 + 2/6 = 5/6. To multiply, multiply across: 2/3 × 3/4 = 6/12 = 1/2. To divide, flip and multiply: 3/4 ÷ 2/5 = 3/4 × 5/2 = 15/8 = 1 7/8. Results are simplified by dividing out the GCD.

1. 1

   Enter the fractions

   Example: 1/2 and 1/3.

2. 2

   Pick the operation

   Add, subtract, multiply or divide.

3. 3

   Read the answer

   1/2 + 1/3 = 5/6 (= 0.8333…), shown simplified with the working.

• 1

  Always simplify fractions by dividing numerator and denominator by their GCD

• 2

  Find a common denominator before adding or subtracting fractions

• 3

  To divide fractions, flip the second fraction and multiply

• 4

  Convert improper fractions to mixed numbers for clearer representation

• Adding numerators and denominators separately - must find common denominator first

• Forgetting to flip the second fraction when dividing - (a/b) / (c/d) = (a/b) x (d/c)

• Not simplifying the final result - always reduce to lowest terms

• Confusing fractions with ratios - 3/4 means 3 out of 4 parts, while 3:4 compares two quantities