A percentage is a way of expressing a number as a fraction of 100. It is denoted using the symbol %. The term comes from the Latin phrase per centum, which means “by the hundred.”
Key Points:
Representation: x% = x on top of 100
Percentages are used to compare proportions, describe increases or decreases, and express probabilities, interest rates, or parts of a whole.
Examples:
Key Points:
Representation: x% = x on top of 100
Percentages are used to compare proportions, describe increases or decreases, and express probabilities, interest rates, or parts of a whole.
Examples:
50% means 50 on top of 100 = 0.5, or half of a whole
25% means 25/100 = 0.25, or one-quarter of a whole.
100% means the entire whole.
Applications:
In daily life: Discounts (e.g., 20% off), grades (e.g., 85% in a test), or interest rates (e.g., 5% annual interest).
In science and statistics: To represent proportions or probabilities.
