Final answer:
To add 0.1223 and 1.01 with the correct number of significant figures, we round our answer to two decimal places, giving us 1.13 as the final correctly rounded result.
Step-by-step explanation:
To perform the addition calculation of 0.1223+1.01 with the correct number of significant figures, we should consider the precision of the numbers given. In addition (and subtraction), the answer must be rounded to the least number of decimal places of any number in the equation. In this case, 0.1223 has four decimal places, and 1.01 has only two decimal places, thus, the final answer must have two decimal places.
Adding these two numbers, we get 1.1323. However, since we must express our final answer with the same number of decimal places as the least precise number, which here is 1.01 with two decimal places, we round 1.1323 to 1.13 to maintain appropriate precision.