Answers

Multiply 21/40 with 9/4

1^st number: 21/40, 2^nd number: 2 1/4

This multiplication involving fractions can also be rephrased as "What is 21/40 of 2 1/4?"

21/40 × 9/4 is 189/160.

Steps for multiplying fractions

1. Simply multiply the numerators and denominators separately:
2. 21/40 × 9/4 = 21 × 9/40 × 4 = 189/160
3. In mixed form: 129/160

MathStep (Works offline)

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

Related: ⁴²/₄₀×⁹/₄ ²¹/₄₀×¹⁸/₄ ²¹/₈₀×⁹/₄ ²¹/₄₀×⁹/₈ ⁶³/₄₀×⁹/₄ ²¹/₄₀ײ⁷/₄ ²¹/₄₀×⁹/₁₂ ²¹/₄₀×⁴⁵/₄ ²¹/₄₀×⁹/₂₀ ²¹/₄₀×⁶³/₄ ²¹/₄₀×⁹/₂₈

Multiply Fractions Calculator