Answers

Multiply 21/16 with 63/80

1^st number: 1 5/16, 2^nd number: 63/80

This multiplication involving fractions can also be rephrased as "What is 21/16 of 63/80?"

21/16 × 63/80 is 1323/1280.

Steps for multiplying fractions

1. Simply multiply the numerators and denominators separately:
2. 21/16 × 63/80 = 21 × 63/16 × 80 = 1323/1280
3. In mixed form: 143/1280

MathStep (Works offline)

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

Related: ⁴²/₁₆×⁶³/₈₀ ²¹/₃₂×⁶³/₈₀ ⁶³/₁₆×⁶³/₈₀ ²¹/₄₈×⁶³/₈₀ ²¹/₈₀×⁶³/₈₀

Multiply Fractions Calculator