Answers

Multiply 45/4 with 81/20

1^st number: 11 1/4, 2^nd number: 4 1/20

This multiplication involving fractions can also be rephrased as "What is 45/4 of 4 1/20?"

45/4 × 81/20 is 729/16.

Steps for multiplying fractions

1. Simply multiply the numerators and denominators separately:
2. 45/4 × 81/20 = 45 × 81/4 × 20 = 3645/80
3. After reducing the fraction, the answer is 729/16
4. In mixed form: 459/16

MathStep (Works offline)

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

Related: ⁹⁰/₄×⁸¹/₂₀ ⁴⁵/₈×⁸¹/₂₀ ⁴⁵/₄×⁸¹/₄₀ ⁴⁵/₁₂×⁸¹/₂₀ ⁴⁵/₄×⁸¹/₆₀ ⁴⁵/₂₀×⁸¹/₂₀ ⁴⁵/₂₈×⁸¹/₂₀

Multiply Fractions Calculator