A student scored 85, 90, 78, and 92 on four tests. What must they score on the fifth test to have an average of 88? - Abbey Badges

Understanding the Context

Earning an average score of 88 across five tests is a common goal for students aiming to improve their performance. But what score is needed on the fifth test if they’ve already scored 85, 90, 78, and 92?

If you’re trying to boost your average to 88, understanding how averages work is key. The average is calculated by dividing the total sum of all scores by the number of tests. To get an average of 88 over five tests, the combined score must equal:

88 × 5 = 440

Right now, the student has scored:
85 + 90 + 78 + 92 = 345

Key Insights

To find the required score on the fifth test, subtract the current total from the target total:

440 − 345 = 95

So, the student must score 95 on the fifth test to achieve an average of 88.

While a perfect 95 may be challenging, understanding this calculation empowers students to set realistic goals and plan strategically—whether by reviewing material, preparing carefully, or practicing test-taking skills. Remember, averages reflect consistent performance—practical effort leads to strong results!

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Final Thoughts

Final Takeaway: A student scoring 85, 90, 78, and 92 needs a score of 95 on the fifth test to earn an average of 88. Use this insight to track progress and aim higher!