Answers

Multiply 21/80 with 90/40

1^st number: 21/80, 2^nd number: 2 10/40

This multiplication involving fractions can also be rephrased as "What is 21/80 of 2 10/40?"

21/80 × 90/40 is 189/320.

Steps for multiplying fractions

1. Simply multiply the numerators and denominators separately:
2. 21/80 × 90/40 = 21 × 90/80 × 40 = 1890/3200
3. After reducing the fraction, the answer is 189/320

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁴²/₈₀×⁹⁰/₄₀ ²¹/₈₀×⁹⁰/₈₀ ⁶³/₈₀×⁹⁰/₄₀

Multiply Fractions Calculator