Answer :
To find the correct answer with the right number of significant figures, follow these steps:
1. Write down the numbers you need to add:
- The numbers are 31.580 and 4.26.
2. Perform the addition:
- When you add these numbers together, you get 35.84.
3. Determine the number of decimal places for significant figures:
- When adding or subtracting, the result should be rounded to the smallest number of decimal places of any number in the problem.
- Here, 31.580 has three decimal places, and 4.26 has two decimal places.
- Therefore, the answer should have two decimal places, since that is the smallest number of decimal places in the problem.
4. Round the result to the correct number of decimal places:
- The result is already 35.84, which has two decimal places, matching our requirement.
Thus, the answer with the correct number of significant figures is 35.84.
1. Write down the numbers you need to add:
- The numbers are 31.580 and 4.26.
2. Perform the addition:
- When you add these numbers together, you get 35.84.
3. Determine the number of decimal places for significant figures:
- When adding or subtracting, the result should be rounded to the smallest number of decimal places of any number in the problem.
- Here, 31.580 has three decimal places, and 4.26 has two decimal places.
- Therefore, the answer should have two decimal places, since that is the smallest number of decimal places in the problem.
4. Round the result to the correct number of decimal places:
- The result is already 35.84, which has two decimal places, matching our requirement.
Thus, the answer with the correct number of significant figures is 35.84.
