Add 1/25 and 81/90
1/25 + 81/90 is 47/50.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
1/25 = 1 × 18/25 × 18 = 18/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
81/90 = 81 × 5/90 × 5 = 405/450 - Add the two like fractions:
18/450 + 405/450 = 18 + 405/450 = 423/450 - 423/450 simplified gives 47/50
- So, 1/25 + 81/90 = 47/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/25+81/90 1/50+81/90 3/25+81/90 1/75+81/90 5/25+81/90 7/25+81/90