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.