Evaluate the expression. Give the answer in the correct number of significant figures.

102.35 + 102.980 =

To evaluate \( 102.35 + 102.980 \), we first add the numbers:

\[
102.35 + 102.980 = 205.33
\]

Now, we need to consider significant figures. The rule for addition is to use the least number of decimal places from the original numbers.

- \( 102.35 \) has **2 decimal places**.
- \( 102.980 \) has **3 decimal places**.

Thus, the answer should be rounded to **2 decimal places** (to match the least precise number). The answer is:

\[
205.33
\]

Would you like further details or have any questions?

### Related Questions:
1. How do you determine significant figures in multiplication and division?
2. Why are significant figures important in scientific calculations?
3. How do you round numbers when working with significant figures?
4. What are the rules for determining the number of significant figures in different types of operations?
5. Can you give examples of how to add and subtract with different numbers of significant figures?

### Tip:
Always remember to match the precision (decimal places) to the least precise measurement when adding or subtracting numbers.

Learn how to correctly evaluate the expression 102.35 + 102.980 and round the result to the correct number of significant figures. This problem covers key concepts in arithmetic and significant figures, suitable for students in Grades 6-8.

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