To calculate the number of questions you need to answer correctly for a score of 80% on a 20-item practice test, you can follow these steps:
1. Convert the percentage to a decimal: 80% is equal to 0.80.
2. Multiply the decimal by the total number of questions: 0.80 * 20 = 16.
3. Round the result to the nearest whole number: 16.
4. Therefore, you need to answer 16 questions correctly to achieve a score of 80% on the 20-item practice test.
