# Lesson Worksheet: Finding Percents Mentally Mathematics

In this worksheet, we will practice finding percents mentally by using a fraction or decimals.

Q1:

If David answered of the questions on his quiz correctly, and the quiz had 10 questions, determine the number of questions he answered correctly.

Q2:

Determine the total cost for a shirt if its regular price is \$24 and the sales tax is .

Q3:

The value of Sophia’s car, which was , has decreased by . What is her car worth now?

Q4:

Given a student answers of the questions on an exam correctly and 10 questions incorrectly, what was the total number of questions on the exam?

Q5:

If there is a discount on a TV set, calculate the percentage by which the sale price must be increased in order to get the original price.

Q6:

By dividing by 4, calculate of 900 mentally.

Q7:

By dividing by 2, calculate of 32 mentally.

Q8:

By dividing by 10 and then multiplying by 3, calculate of 90 mentally.

Q9:

The school football team won of their matches. If they played 10 matches, how many matches did they lose?

Q10:

A student needs to get on a mathematics exam to pass. If he answers 15 questions correctly out of 30, how many questions more does he need to answer correctly?