Test: Percent and Percentage - Class 8 MCQ

To convert 25% to a fraction, write it as 25/100 and simplify to 1/4. This process of conversion is important in mathematics, as it allows for comparisons between different numerical formats.

To find the percentage, divide the score by the total possible score and multiply by 100. So, (90/120) × 100 = 75%. This shows how the score compares to the total possible, which is crucial for understanding performance metrics in tests.

The correct formula to find what percentage one number is of another is (part/whole) × 100. Here, (15/60) × 100 gives you 25%. This method is widely applicable in statistics and everyday calculations.

To convert a fraction to a percent, multiply by 100 and add the % symbol. For 3/4, (3/4) × 100 = 75%. This conversion is essential in various contexts, such as finance and statistics, where understanding proportions is necessary.

The fraction 7/100 can be expressed directly as 7%, as it represents 7 parts out of 100. This conversion is straightforward and commonly used in statistics and data presentations.

To find 40% of 250, convert the percentage to a decimal by dividing by 100 (0.40) and then multiply by 250. So, 0.40 × 250 = 100. Understanding this calculation is vital in real-life situations like calculating discounts or tax amounts.

To find the percentage decrease, first calculate the decrease: $40 - $30 = $10. Then, divide the decrease by the original price: $10/$40 = 0.25. Multiply by 100 to get 25%. This calculation is useful for understanding sales and pricing strategies.

To express 60% as a decimal, divide by 100: 60/100 = 0.6. This conversion is fundamental in various calculations, particularly in finance and data analysis, where decimals are often used instead of percentages.

The increase is 250 - 200 = 50. To find the percentage increase, divide the increase by the original value: 50/200 = 0.25, then multiply by 100 to get 25%. This calculation is crucial for tracking growth in various contexts, such as finance and project management.

The first step in converting a percent to a fraction is to divide the percent value by 100, removing the % symbol in the process. Understanding this step is essential for accurate mathematical conversions and comparisons.

To find the percentage of subjects passed, divide 18 by 60, which equals 0.3, and then multiply by 100 to get 30%. This method is useful in academic assessments to evaluate performance.

To find the new price after a 30% decrease, calculate 30% of $150, which is $45. Subtract that from the original price: $150 - $45 = $105. This calculation is crucial for understanding sale prices and discounts.

The term "percent" literally means "per hundred," representing a value as a fraction of 100. This concept allows for easier comparison between different quantities. For instance, 25% means 25 out of every 100, making it a useful tool in various calculations, such as discounts or statistical comparisons.

To express an increase of 10% on 50, you calculate 10% of 50, which is 5, and add it to 50: 50 + 5 = 55. This method helps in understanding how percentages affect overall values, especially in financial contexts.

To find 50% of a number, you divide it by 2. For instance, 50% of 80 is 80 ÷ 2 = 40. This concept is fundamental in various calculations, including discounts and statistical analyses.

To calculate the tax amount, multiply the purchase price by the tax percentage: $200 × 0.15 = $30. Understanding how to calculate taxes is vital for budgeting and financial planning.

The increase is 1,200 - 1,000 = 200. The percentage increase is (200/1,000) × 100 = 20%. This calculation is commonly used in demographics and economic studies to analyze growth trends.

A percentage of 100% indicates the entire value or complete value of something. It is often used in assessments to show total completion or full marks, emphasizing the importance of achieving full potential.

Both calculations, 200 × 0.25 and 200 ÷ 4, yield the same result of 50. This illustrates flexibility in percentage calculations, which can be approached from different angles depending on the context.

To convert 2/5 to a percentage, multiply by 100: (2/5) × 100 = 40%. This conversion is essential in various fields, including finance and statistics, to express ratios in a more understandable format.