In October, Mrs. Anderson graded 12 homework assignments for each of her students.

Mrs. Anderson's Class Counts

Class Number of Students
1 22
2 18
3 16
4 24




Part A

About how many homework assignments did Mrs. Anderson grade in October? Use compatible numbers to estimate.

(1 point)
Responses

10

10

85

85

850

850

1,200

1 answer

To estimate the number of homework assignments Mrs. Anderson graded, we can first total the number of students in her classes:

Class 1: 22 students
Class 2: 18 students
Class 3: 16 students
Class 4: 24 students

Total number of students = 22 + 18 + 16 + 24 = 80 students

Next, Mrs. Anderson graded 12 homework assignments per student. We want to estimate the total number of homework assignments graded:

80 students × 12 assignments = 960 assignments

Now, we will round the numbers to compatible numbers for easier estimation:

  • Round the number of students (80) to 80.
  • Round the number of assignments (12) to 10 (or keep it as is for a slight adjustment).

Calculating using the rounded numbers gives us:

80 students × 10 assignments = 800 assignments

Now looking at the response options, the closest estimate is 850.

Thus, the estimated number of homework assignments Mrs. Anderson graded in October is 850.