Percent Word Problem Review Day 4

Front

What is the formula to calculate the percentage of correct answers?

Back

Percentage = (Number of Correct Answers / Total Number of Questions) x 100

Front

How do you calculate the percent increase from one value to another?

Back

Percent Increase = ((New Value - Old Value) / Old Value) x 100

Front

If a test has 20 questions, how do you determine how many correct answers are needed for a specific percentage score?

Back

To find the number of correct answers needed, multiply the total number of questions by the desired percentage (as a decimal). For 80%, it would be 20 x 0.80 = 16.

Front

What is the definition of a percent?

Back

A percent is a ratio expressed as a fraction of 100.

Front

How do you find the amount withheld from an income based on a percentage?

Back

To find the amount withheld, multiply the total income by the percentage (as a decimal). For example, for 18% of $18,500, it would be $18,500 x 0.18.

Front

What does it mean when a price increases by a certain percentage?

Back

It means that the new price is higher than the original price by that percentage of the original price.

Front

How do you convert a fraction to a percentage?

Back

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

Front

What is the relationship between decimals and percentages?

Back

A percentage is a decimal multiplied by 100. For example, 0.25 is 25%.

Front

How can you express a 20% increase in price mathematically?

Back

A 20% increase can be expressed as New Price = Original Price + (0.20 x Original Price).

Front

What is the significance of understanding percent word problems in real life?

Back

Percent word problems help in making informed decisions related to finance, shopping, and understanding statistics.