Add 3/8 and 40/81
3/8 + 40/81 is 563/648.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 8 × 81 = 648,
3/8 = 3 × 81/8 × 81 = 243/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
40/81 = 40 × 8/81 × 8 = 320/648 - Add the two like fractions:
243/648 + 320/648 = 243 + 320/648 = 563/648 - So, 3/8 + 40/81 = 563/648
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/8+40/81 3/8+80/81 3/16+40/81 9/8+40/81 3/24+40/81 15/8+40/81 3/40+40/81 21/8+40/81 3/56+40/81