Test Algebra 1 Percentages

Front

What is percent error?

Back

Percent error is a measure of how inaccurate a measurement is, expressed as a percentage of the true value. It is calculated using the formula: Percent Error = |(Estimated Value - Actual Value)| / Actual Value * 100.

Front

How do you calculate percent decrease?

Back

Percent decrease is calculated by taking the difference between the original price and the sale price, dividing that by the original price, and then multiplying by 100. Formula: Percent Decrease = (Original Price - Sale Price) / Original Price * 100.

Front

What percent of a figure is shaded if 63% is shaded?

Back

If 63% of a figure is shaded, it means that 63 out of every 100 parts of the figure are shaded.

Front

How do you convert a decimal to a percent?

Back

To convert a decimal to a percent, multiply the decimal by 100 and add a percent sign. For example, 0.375 * 100 = 37.5%.

Front

What is the formula for calculating percent change?

Back

Percent change is calculated using the formula: Percent Change = (New Value - Old Value) / Old Value * 100.

Front

If a product's price decreases from $25 to $15, what is the percent decrease?

Back

The percent decrease is calculated as: ((25 - 15) / 25) * 100 = 40%.

Front

What does it mean if a value is 20% of another value?

Back

If a value is 20% of another value, it means that it is 20 out of every 100 parts of that value.

Front

How do you find the percent of a number?

Back

To find the percent of a number, multiply the number by the percent (as a decimal). For example, to find 20% of 50, calculate 50 * 0.20 = 10.

Front

What is the relationship between fractions and percentages?

Back

Fractions can be converted to percentages by dividing the numerator by the denominator and then multiplying by 100. For example, 1/4 = (1 ÷ 4) * 100 = 25%.

Front

What is a markup percentage?

Back

Markup percentage is the amount added to the cost price of goods to cover overhead and profit. It is calculated as: Markup Percentage = (Selling Price - Cost Price) / Cost Price * 100.