A student estimated that it would take 3 hours to write a book report, but it actually took her 5 hours. What is the percent error for her estimate?
Question 2
2.
A radar gun measured the speed of a baseball at 103 miles per hour. If the baseball was actually going 102.8 miles per hour, what was the percent error in this measurement?
Question 3
3.
It took 48 minutes to drive downtown. An app estimated it would be less than that. If the error was 20%, what was the app’s estimate?
Question 4
4.
A farmer estimated that there were 25 gallons of water left in a tank. If this is an underestimate by 16%, how much water was actually in the tank?
For each story, write an equation that describes the relationship between the two quantities.
1
Question 5
5.
Diego collected x kg of recycling. Lin collected \frac{2}{5} more than that.
1
Question 6
6.
Lin biked x km. Diego biked \frac{3}{10} less than that.
1
Question 7
7.
Diego read for x minutes. Lin read \frac{4}{7} of that.
Question 8
8.
For Diagram A, decide if y is an increase or a decrease of x. Then determine the percentage.
Question 9
9.
For Diagram B, decide if y is an increase or a decrease of x. Then determine the percentage.
Question 10
10.
Lin is making a window covering for a window that has the shape of a half circle on top of a square of side length 3 feet. How much fabric does she need?