Final answer:
The result of adding 23.5 and 7.025 is 30.525, which is found by aligning the decimal points and adding the numbers column by column.
Step-by-step explanation:
The result of adding 23.5 and 7.025 is determined by aligning the decimal points and adding the numbers column by column.
Here's a step-by-step addition:
- 23.5 can be written as 23.500 to match the number of decimal places with 7.025
- Now, add each column starting from the rightmost digit:
23.500
+ 7.025
——————
30.525
Thus, the correct answer is 30.525, which corresponds to option 1).
It's important to remember the rules for significant figures and rounding when working with inexact numbers. In addition and subtraction, the answer should have the same number of decimal places as the number with the least decimal places from the original numbers.