Add 4/10 and 2/81
4/10 + 2/81 is 172/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 10 × 81 = 810,
4/10 = 4 × 81/10 × 81 = 324/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
2/81 = 2 × 10/81 × 10 = 20/810 - Add the two like fractions:
324/810 + 20/810 = 324 + 20/810 = 344/810 - 344/810 simplified gives 172/405
- So, 4/10 + 2/81 = 172/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/10+2/81 4/10+4/81 4/20+2/81 12/10+2/81 4/10+6/81 4/30+2/81 20/10+2/81 4/10+10/81 4/50+2/81 28/10+2/81 4/10+14/81 4/70+2/81