Final answer:
The expressions provided by the student have been solved with careful attention to significant figures and rounding. The answers are 59.44 for the first expression, 1.0107 for the second, and 13.19 for the third, all rounded to the appropriate degree of precision.
Step-by-step explanation:
The student is asking to solve a series of arithmetic expressions while ensuring that the final answers are provided with the correct number of significant figures and are rounded as necessary. Here are the calculated expressions:
- 56.0 + 3.44 = 59.44 – Since the least number of decimal places in the numbers given is one, after rounding to the nearest hundredth the answer should be reported as 59.44.
- 0.00665 + 1.004 = 1.01065 - The least number of significant figures in the given numbers is four, so after rounding to the fourth decimal, the answer is 1.0107.
- 45.99 - 32.8 = 13.19 - The least number of decimal places in the numbers given is one, thus the answer, rounded to the nearest hundredth, is 13.19.
It is important to ensure that the answers to each of these problems are precise and follow the rules of significant figures for consistency and accuracy in mathematical and scientific calculations.