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Here are the solutions for the even-numbered items from question 2, following the rules of significant figures (aturan angka penting):

**2. Even-numbered items:**

b. \( 15.40 + 21 = 36.40 \)  
   The result has 4 significant figures.

d. \( 0.564 + 0.4 = 0.96 \)  
   The result should have 1 decimal place (due to 0.4).

f. \( 720 + 466 = 1,186 \)  
   The result should be rounded to 3 significant figures, so it becomes 1,190.

h. \( 546 + 25 = 571 \)  
   Both numbers have 3 significant figures, so the result is 571 (no rounding needed).

j. \( 0.00956 + 0.00044 = 0.01000 \)  
   The answer has 4 decimal places to match the precision of 0.00956.

Would you like further details on these answers? Let me know if you have any questions!

Here are 5 related questions to expand your knowledge:
1. How do you determine the number of significant figures in a sum?
2. When should results be rounded in addition or subtraction?
3. Why is it important to follow significant figure rules in calculations?
4. Can you give an example where rounding due to significant figures changes the interpretation of results?
5. How do significant figures apply to multiplication and division?

**Tip:** When adding or subtracting, always match the precision (decimal places) to the least precise number in the operation.

Explore solved examples of addition using significant figures rules for even-numbered items from Question 2. Learn how to apply rounding rules in addition and ensure the result has the correct number of significant figures. Suitable for students in Grades 8-10.

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