Calculating Averages and Sums

The average of 8 test scores is 72. What is the sum of all the test scores?

• 576

• 500

• 560

• 567

Tags

CCSS.7.EE.B.3

The sum of 5 quiz scores is 365. What is the average score?

• 73

• 70

• 65

• 63

Tags

CCSS.7.EE.B.3

The average of 20 numbers is 4.5. If one more number (a 10) is added to the group, what is the new average?

• 4.76

• 5

• 4

• 4.67

Tags

CCSS.7.NS.A.3

A basketball player scored the following points in five games: 12, 15, 18, 20, and x. If their average is 17, what is the value of x?

• 20

• 15

• 12

• 18

Tags

CCSS.7.EE.B.3

A class has 8 students with an average of 75, and 12 students with an average of 85. What is the overall class average?

• 78

• 81

• 82

• 84

In a science fair, 10 projects from freshmen scored an average of 70, and 5 projects from sophomores scored an average of 90.
What was the overall average score?

• 75

• 76.7

• 78

• 80

A company has two departments.

• Department A: 20 employees, average salary = $40,000

• Department B: 10 employees, average salary = $55,000

What is the company’s overall average salary?

• $45,000

• $46,667

• $48,333

• $50,000

A student’s course grade is based on two parts:

• Homework (40% of the grade) average = 80

• Tests (60% of the grade) average = 90

What is the student’s final weighted average?

• 82

• 84

• 86

• 88

Tags

CCSS.6.NS.B.3

A college has 300 underclassmen with an average GPA of 2.8, and 200 upperclassmen with an average GPA of 3.4.
What is the college’s overall GPA average?

• 3.0

• 3.1

• 3.2

• 3.3

Find the mean.

(a)  

Tags

CCSS.6.SP.B.5C