Math

Add, Subtract, Multiply & Divide Fractions

Built by Kevin Glover · @gloverbuilds · Verified formula

Perform operations on fractions with step-by-step simplification. Mixed numbers supported.

📅 Updated April 2026 ✅ Formula verified 📖 4 min read 🆓 Free · No sign-up

In this article

Fraction Operations
Simplifying Fractions

Opérations

Addition/soustraction : même dénominateur requis. 1/4 + 1/3 = 3/12 + 4/12 = 7/12. Multiplication : numérateur × numérateur, dénominateur × dénominateur. 2/3 × 3/4 = 6/12 = 1/2. Division : inverser et multiplier. 2/3 ÷ 3/4 = 2/3 × 4/3 = 8/9.

Simplification

Trouvez le PGCD des deux nombres. 6/12 : PGCD(6,12) = 6. 6÷6/12÷6 = 1/2.

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Frequently asked questions

Comment additionner des fractions ?▾

Trouvez le dénominateur commun, convertissez, additionnez les numérateurs. 1/3 + 1/4 = 4/12 + 3/12 = 7/12.

Comment simplifier ?▾

Divisez numérateur et dénominateur par leur PGCD. 8/12 : PGCD = 4. 8÷4/12÷4 = 2/3.

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Kevin Glover · @gloverbuilds

Founder, CalcWolf · GLVTS · Blickr

All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →