Practice Percent as Ratio in Math
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
A ratio comparing a quantity to 100, written with the % symbol; 'per cent' literally means 'per hundred'.
'Per cent' means 'per hundred'— means 25 out of every 100.
Showing a random 20 of 50 problems.
Example 1
hardA factory produces widgets per day; are defective. What percent are defective?
Example 2
mediumConvert to a percent.
Example 3
mediumA population grew from to . What is the percent increase?
Example 4
hardA class has boys and girls in the ratio . What percent of the class is boys?
Example 5
mediumOrder from smallest to largest: , , .
Example 6
mediumExpress the ratio as a percent.
Example 7
mediumExpress as a percent.
Example 8
challengeIn a class of , are girls. Of the girls, play soccer. What percent of the entire class are soccer-playing girls?
Example 9
hardA bookstore sold of copies of a novel. What percent remain unsold?
Example 10
mediumA price rises from to . What is the percent increase?
Example 11
mediumA tip of is added to a bill. What is the total?
Example 12
mediumA jacket originally costs $60 and is on sale for $45. What percent of the original is the sale price?
Example 13
mediumConvert to a percent.
Example 14
mediumA car's gas tank holds 16 gallons and currently has 12 gallons. What percent full is it?
Example 15
hardA salary rose from $2{,}000 to $2{,}500 per month. Express the new salary as a percent of the old.
Example 16
medium out of students passed. What percent passed?
Example 17
medium of a class of wear glasses. How many is that?
Example 18
easyConvert each to the indicated form: (a) to percent, (b) to decimal, (c) to percent.
Example 19
easyConvert to a percent.
Example 20
easyWhat is of ?