Lesson Worksheet: Percentage Increase and Decrease Mathematics • 9th Grade
In this worksheet, we will practice increasing and decreasing by a percentage.
Q1:
A 40-meter piece of cloth shrinks by . What is the length of the cloth after shrinking?
Q2:
In 2000, a seminar’s attendance was about 43,900 people. If the attendance grew from 2000 to 2005, what was the approximate attendance in 2005?
Q3:
Matthew deposited $6,800 into his bank account, which earned simple interest. How much will he have in his account after 19 years?
Q4:
Increase 40 by .
Q5:
A USB flash drive that has a regular price of $59 is on sale at a discount. Determine its sale price.
Q6:
Decrease 45 by .
Q7:
Increase 45 by .
Q8:
Decrease 450 by .
Q9:
A mobile app, whose regular price is $11.43, is on sale at a discount of . Find the sale price to the nearest cent.
Q10:
Sophia ordered a TV set online. The set cost $1,629 in addition to a sales tax of . Determine, to the nearest cent, the total amount she paid.
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