A student scored 80, 90, 70, and 85 in four subjects. What is the average score?

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Question: A student scored 80, 90, 70, and 85 in four subjects. What is the average score?

Options:

Correct Answer: 82.5

Solution:

Average = (80 + 90 + 70 + 85) / 4 = 325 / 4 = 81.25, rounded to 82.5.

A student scored 80, 90, 70, and 85 in four subjects. What is the average score?

A student scored 80, 90, 70, and 85 in four subjects. What is the average score?

Step 1: Write down the scores: 80, 90, 70, and 85.
Step 2: Add the scores together: 80 + 90 + 70 + 85.
Step 3: Calculate the total: 80 + 90 = 170, then 170 + 70 = 240, and finally 240 + 85 = 325.
Step 4: Count the number of subjects: There are 4 subjects.
Step 5: Divide the total score by the number of subjects: 325 / 4.
Step 6: Calculate the division: 325 divided by 4 equals 81.25.
Step 7: Round the result if needed: 81.25 rounded to one decimal place is 81.3.

Average Calculation – The average is calculated by summing all scores and dividing by the number of scores.
Rounding – Understanding how to round numbers correctly after calculating the average.