To decrease 80 by 25%, you can follow these steps:

1. Calculate 25% of 80:
   \[
   25\% \text{ of } 80 = \frac{25}{100} \times 80 = 0.25 \times 80 = 20
   \]

2. Subtract the result from 80:
   \[
   80 - 20 = 60
   \]

So, when you decrease 80 by 25%, the result is **60**.

Would you like more details or have any questions?

Here are some related questions to further your understanding:
1. How do you calculate a percentage increase instead of a decrease?
2. What would be the result of increasing 80 by 25%?
3. How can you express a 25% decrease as a decimal multiplier?
4. What is the difference between percentage decrease and absolute decrease?
5. How do you calculate the original amount if you know the decreased amount and the percentage?

**Tip:** To decrease a number by a percentage, you can multiply the original number by \((1 - \text{percentage in decimal form})\).

Learn how to decrease 80 by 25% with this easy, step-by-step explanation. This guide walks through calculating the percentage decrease, providing formulas and examples suitable for students in Grades 5-7.

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