Question

Thi has taken four math tests. She scored 96 on her

first test. For each of the next three tests, the table shows the
change in score from the previous test. Find the mean of
the changes.

Answer 1

84.5

Explanation:

1: 96 - 13 to get difference = 83

2: 83 - 5 = 78

3: 78 + 3 = 81

4: (83 + 78 + 81 + 93) / 4 = 84.5