1. The problem asks to find the percentage of given amounts. 2. The formula to find a percentage of an amount is: $$\text{Percentage of amount} = \frac{\text{Percentage}}{100} \times \text{Amount}$$ 3. We apply this formula to each question: - 50% of 270: $$= \frac{50}{100} \times 270 = \frac{\cancel{50}}{\cancel{100}} \times 270 = 0.5 \times 270 = 135$$ - 20% of 130: $$= \frac{20}{100} \times 130 = \frac{\cancel{20}}{\cancel{100}} \times 130 = 0.2 \times 130 = 26$$ - 25% of 660: $$= \frac{25}{100} \times 660 = \frac{\cancel{25}}{\cancel{100}} \times 660 = 0.25 \times 660 = 165$$ - 80% of 340: $$= \frac{80}{100} \times 340 = \frac{\cancel{80}}{\cancel{100}} \times 340 = 0.8 \times 340 = 272$$ - 75% of 460: $$= \frac{75}{100} \times 460 = \frac{\cancel{75}}{\cancel{100}} \times 460 = 0.75 \times 460 = 345$$ - 10% of 59: $$= \frac{10}{100} \times 59 = \frac{\cancel{10}}{\cancel{100}} \times 59 = 0.1 \times 59 = 5.9$$ - 10% of 520: $$= \frac{10}{100} \times 520 = \frac{\cancel{10}}{\cancel{100}} \times 520 = 0.1 \times 520 = 52$$ - 30% of 279: $$= \frac{30}{100} \times 279 = \frac{\cancel{30}}{\cancel{100}} \times 279 = 0.3 \times 279 = 83.7$$ 4. These are the final answers: - 50% of 270 = 135 - 20% of 130 = 26 - 25% of 660 = 165 - 80% of 340 = 272 - 75% of 460 = 345 - 10% of 59 = 5.9 - 10% of 520 = 52 - 30% of 279 = 83.7 This method works by converting the percentage to a decimal and multiplying by the amount to find the part of the whole represented by that percentage.