Averages and Percent Error (7th Grade)

Jake scored 15 points, 20 points, and 10 points in his last three basketball games. What is his average score?

• 15

• 12

• 18

• 10

Sarah read 120 pages on Monday, 80 pages on Tuesday, and 100 pages on Wednesday. What is the average number of pages she read?

• 100

• 95

• 110

• 105

The cost of movie tickets for three different theaters is $8.50, $9.00, and $9.50. What is the average price of a ticket?

• $9.00

• $8.75

• $9.25

• $8.50

Maria got 88, 92, and 95 on her last three math tests. What is her average score?

• 92

• 90

• 91

• 93

Over four days, Billy ran 2.5 miles, 3 miles, 2 miles, and 3.5 miles. What is his average distance per day?

• 2.8 miles

• 3.0 miles

• 2.75 miles

• 3.25 miles

The actual mass of an object is 50 grams, but Laura measured it as 48 grams. What is the percent error?

• 4%

• 2%

• 6%

• 5%

The actual length of a book is 30 cm, but Alex measured it as 32 cm. What is the percent error?

• 6.67%

• 5%

• 7%

• 6%

The weather forecast predicted the temperature would be 65°F, but the actual temperature was 60°F. What is the percent error?

• 8.33%

• 10%

• 7.69%

• 9.09%

A plant was expected to grow to 15 cm, but it only grew to 13 cm. What is the percent error?

• 15%

• 10%

• 13.33%

• 12%

Jimmy predicted he would make 20 free throws, but he only made 18. What is the percent error?

• 10%

• 9%

• 5%

• 8%