The sum is:

\[
5 + 10 + 10 + 10 + 20 + 25 = 80
\]

Would you like more details or have any questions?

Here are five related questions:
1. How do you add a series of numbers quickly?
2. What are the properties of addition?
3. How does grouping numbers help in addition?
4. Can addition be used to solve real-world problems?
5. How does addition work with negative numbers?

**Tip:** Grouping numbers in pairs or small groups that sum to 10, 20, etc., can make addition quicker and easier.

Learn how to quickly add numbers with the example 5 + 10 + 10 + 10 + 20 + 25, which sums to 80. This addition problem demonstrates key arithmetic skills suitable for students in Grades 3-5.

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