Answers

Add 4/10 and 81/20

1^st number: 4/10, 2^nd number: 4 1/20

4/10 + 81/20 is 89/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 20 is 20
   
   Next, find the equivalent fraction of both fractional numbers with denominator 20
2. For the 1st fraction, since 10 × 2 = 20,
   4/10 = 4 × 2/10 × 2 = 8/20
3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
   81/20 = 81 × 1/20 × 1 = 81/20
4. Add the two like fractions:
   8/20 + 81/20 = 8 + 81/20 = 89/20
5. So, 4/10 + 81/20 = 89/20
   In mixed form: 49/20

MathStep (Works offline)

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

Related: ⁸/₁₀+⁸¹/₂₀ ⁴/₂₀+⁸¹/₂₀ ⁴/₁₀+⁸¹/₄₀ ¹²/₁₀+⁸¹/₂₀ ⁴/₃₀+⁸¹/₂₀ ⁴/₁₀+⁸¹/₆₀ ²⁰/₁₀+⁸¹/₂₀ ⁴/₅₀+⁸¹/₂₀ ²⁸/₁₀+⁸¹/₂₀ ⁴/₇₀+⁸¹/₂₀

Add Fractions Calculator