1. Set up the long addition. 4.30 + 2.75 2. Calculate 0 + 5, which is 5. 4.30 + 2.75 = 5 3. Calculate 3 + 7, which is 10. since 10 is two-digit, we carry the first digit 1 to the next column 1 4.30 + 2.75 = 05 1 4.30 + 2.75 = 7.05 5. Therefore, 4.3 + 2.75 = 7.05. 7.05