Part, Percent, or Whole
What is 75% of 1,024?
768
A town’s population grew from 13,750 to 18,430 over a decade. What is the percent increase in population? Round to the nearest whole percent.
About 34% increase
Melissa estimated that she would read 250 pages last week. She read 290 pages. What is the percent error of Melissa’s estimate? Round to the nearest whole percent.
14% error
A store buys headphones for $36 and sells them for $54. What percent markup did the store apply?
50% markup
45 is 30% of what number?
150
In 2024, the attendance at a school’s Fall Festival was 650. In 2025, the attendance was 575. What was the percent change in attendance from 2014 to 2015 Round to the nearest whole percent.
About 12% decrease
A student measures the mass of a glue stick using a small digital scale. The scale reads 28 grams, but the actual mass printed on the label is 30 grams. What is the percent error in the student’s measurement? Round to the nearest percent.
About 7%
A winter jacket originally costs $120, but it is marked down by 35% during a sale. What is the new sale price?
$78
A runner completed 42 miles out of 65 miles in a month-long challenge. About what percent of the challenge did they complete?
65%
Juan’s puppy weighed 16 pounds at the age of 2 months. The puppy weighed 60 pounds at the age of 8 months. What is the percent change in the puppy’s weight?
275% increase
A track coach uses a stopwatch and records a runner’s time as 13.8 seconds for a sprint. The fully automated timing system shows the official time is 13.5 seconds.
What is the percent error in the coach’s measurement? Round to the nearest tenth.
About a 2.2% error
A pair of running shoes is on sale for $63 after a 30% markdown. What was the original price before the discount?
$44.10
Ethan put $700 into a Certificate of Deposit (CD) account that earns 1.8% interest each year. What will the amount of interest of the CD account be after 6 years?
$75.60
A laptop is discounted by 27% during a weekend sale. Its original price is $740. How much money is taken off the price?
$199.80
A company produced 92,400 units of a product one year and only 78,960 the next year. The following year, production rose to 84,500 units. What is the percent change from the first year to the third year?
About a 9% decrease
A recipe calls for 2.5 cups of flour. When a student chef measures it out, they actually used 2.35 cups. What is the percent error in their measurement?
6%
Jen wants to buy a smartwatch. Store A sells it for $180 with a 20% discount. Store B sells the same smartwatch for $195 with a 25% discount. Which store has the lower selling price?
Store A
Yuni took out a loan of $400 from the bank. He will repay the loan by paying 2.5% simple interest for 3 years. How much in total will he have to repay the bank?
$430
A charity received 168 donations, which is 32% of their fundraising goal. What is their total goal?
525
A school tracks the total number of students for four consecutive years.
Year 1: 260 students Year 2: 310 students
Year 3: 350 students Year 4: 420 students
Between which two consecutive years did the program experience the greatest percent increase?
Year 3 & 4
A company sells bars of handmade soap that are supposed to weigh 120 grams, with an allowed percent error of 4%. A particular bar weighs 126.5 grams. Is this bar acceptable to package and sell?
No the error 5.24% is greater than the allowed 4%.
Alejandro is buying two pairs of jeans that cost 35$ each. He can use a coupon that's buy one get one 40% off, or he can use a coupon that's 30% off his total. Which coupon should he use to save more money?
Coupon B
Kelly opened a bank account that earns 1.2% simple interest each year. After 7 years, Kelly will earn $126 in interest. How much did Kelly deposit when she opened the account?
$1,500