Math worksheet for calculating percentages.

To solve the problem of calculating percentages, we need to compute each percentage value step by step. The general formula for calculating a percentage is:

\[
\text{Percentage Value} = \left( \frac{\text{Part}}{\text{Whole}} \right) \times 100
\]

However, in this case, the problems are given in the form of "X% of Y," which can be calculated using:

\[
\text{Result} = \left( \frac{X}{100} \right) \times Y
\]

Let's solve each problem systematically.

---

Part 1: Calculating the Percentages

#### 1. 25% of 60
\[
25\% \text{ of } 60 = \left( \frac{25}{100} \right) \times 60 = 0.25 \times 60 = 15
\]

#### 2. 25% of 80
\[
25\% \text{ of } 80 = \left( \frac{25}{100} \right) \times 80 = 0.25 \times 80 = 20
\]

#### 3. 45% of 50
\[
45\% \text{ of } 50 = \left( \frac{45}{100} \right) \times 50 = 0.45 \times 50 = 22.5
\]

#### 4. 25% of 40
\[
25\% \text{ of } 40 = \left( \frac{25}{100} \right) \times 40 = 0.25 \times 40 = 10
\]

#### 5. 25% of 200
\[
25\% \text{ of } 200 = \left( \frac{25}{100} \right) \times 200 = 0.25 \times 200 = 50
\]

#### 6. 95% of 25
\[
95\% \text{ of } 25 = \left( \frac{95}{100} \right) \times 25 = 0.95 \times 25 = 23.75
\]

#### 7. 25% of 100
\[
25\% \text{ of } 100 = \left( \frac{25}{100} \right) \times 100 = 0.25 \times 100 = 25
\]

#### 8. 25% of 300
\[
25\% \text{ of } 300 = \left( \frac{25}{100} \right) \times 300 = 0.25 \times 300 = 75
\]

#### 9. 95% of 50
\[
95\% \text{ of } 50 = \left( \frac{95}{100} \right) \times 50 = 0.95 \times 50 = 47.5
\]

#### 10. 25% of 150
\[
25\% \text{ of } 150 = \left( \frac{25}{100} \right) \times 150 = 0.25 \times 150 = 37.5
\]

#### 11. 45% of 70
\[
45\% \text{ of } 70 = \left( \frac{45}{100} \right) \times 70 = 0.45 \times 70 = 31.5
\]

#### 12. 75% of 70
\[
75\% \text{ of } 70 = \left( \frac{75}{100} \right) \times 70 = 0.75 \times 70 = 52.5
\]

---

Final Answers

\[
\boxed{
\begin{array}{ll}
1. & 15 \\
2. & 20 \\
3. & 22.5 \\
4. & 10 \\
5. & 50 \\
6. & 23.75 \\
7. & 25 \\
8. & 75 \\
9. & 47.5 \\
10. & 37.5 \\
11. & 31.5 \\
12. & 52.5 \\
\end{array}
}
\]