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

Question

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

1,200
Question 2
(1 point)


Part B

What was the total number of assignments Mrs. Anderson graded for classes 1 and 3 in October?
Enter your answer in the box.

assignments

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Answer 1

To estimate the total number of homework assignments Mrs. Anderson graded in October, we'll use compatible numbers.

Part A

1. Number of Students in Each Class:

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

2. Total Number of Students:

   • Total = 22 + 18 + 16 + 24 = 80 students

3. Total Homework Assignments Graded:

   • Each student had 12 assignments.
   • Estimated total assignments = 80 students × 12 assignments = 960 assignments.

Therefore, the closest estimate using compatible numbers is 1,200.

Part B

To calculate the total number of assignments graded for classes 1 and 3:

1. Class 1:

   • Number of students: 22
   • Assignments graded = 22 students × 12 assignments = 264 assignments.

2. Class 3:

   • Number of students: 16
   • Assignments graded = 16 students × 12 assignments = 192 assignments.

3. Total for Classes 1 and 3:

   • Total = 264 + 192 = 456 assignments.

Thus, Mrs. Anderson graded 456 assignments for classes 1 and 3 in October.