ALG1A 2.9 percents

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part per hundred.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and then multiply by 100.

Front

What is the formula to find a percentage of a number?

Back

The formula to find a percentage of a number is: \( \text{Percentage} = \frac{\text{Part}}{\text{Whole}} \times 100 \)

Front

How do you find 14% of 60?

Back

To find 14% of 60, use the formula: \( 14\% \text{ of } 60 = \frac{14}{100} \times 60 = 8.4 \)

Front

What is the relationship between percentages and proportions?

Back

Percentages can be expressed as proportions. For example, 14% can be written as \( \frac{14}{100} \).

Front

What is the proportion used to find 14% of 60?

Back

The proportion is: \( \frac{14}{100} = \frac{x}{60} \) where x is the part.

Front

How do you solve the proportion \( \frac{14}{100} = \frac{x}{60} \)?

Back

Cross-multiply to solve: \( 14 \times 60 = 100 \times x \) which simplifies to \( x = \frac{840}{100} = 8.4 \).

Front

What does it mean to find a percent of a number?

Back

Finding a percent of a number means calculating how much that percent represents in relation to the whole number.

Front

How can you express 14% as a decimal?

Back

To express 14% as a decimal, divide by 100: \( 14\% = 0.14 \).

Front

What is the formula for finding the whole when given a part and a percent?

Back

The formula is: \( \text{Whole} = \frac{\text{Part}}{\text{Percent}} \times 100 \)