Percent to Decimal/Decimal to Percent
On Monday, Terry made 12 freethrows and on Wednesday, he made 15. What is the percent increase
What is 20% increase?
The recipe calls for 3 cups of pasta. Lily estimated and accidentally used 5 cups. What is the percent error in her measurement?
66%
On your first test, you got a 40 and on the retake, you got an 80.
100% increase?
Patrick guesses that the mass of a rock is 7.2 lbs. After weighing the rock, he realizes it is actually 8.2 lbs. What is the percent error in his guess?
12%
A fruit drink that was sold in 16-ounce containers is now sold in 20-ounce containers. What is the percent of change in quantity? State whether this is an increase or a decrease.
25% increase
DAILY DOUBLE
Bradley guesses that he will bike 30 miles today. Bradley gets tired and only bikes 27 miles. What is the percent error in his estimate?
11%
Ms. Nelson drinks 24 ounces of coffee in one day. The next day she drinks 6 ounces less. What is the percent change?
25% decrease
DAILY DOUBLE
The cost of a coffee machine originally priced at $200, marked 25% off, after 10% tax?
What is $165?
0%. They were correct!
A painting is valued at $1500. The value increased by in 2024, but decreased by in 2025. What is the total percentage change over the two years?
10% change
2 bike stores are having sales.
Store A: A bike is 450 dollars. The store is having a 20% sale and then 10% off the sale price.
Store B: A bike is 450 dollars and they are offering a one time sale of 25% off.
Store A: $324!
(Store B is $337.50)
A basketball should be inflated to 8 PSI. After inflating his basketball, Justin realizes that he has a 25% error. What is one possible PSI level that Justin's basketball has? (Hint 2 possible answers)
6 PSI or 8 PSI