A student scored 85, 90, 92, and 88 on four math tests. What score must the student get on the fifth test to have an average of exactly 90?

Wed, 06 May 2026 10:34:36 +0000

**A student scored 85, 90, 92, and 88 on four math tests. What score must the student get on the fifth test to have an average of exactly 90?** In a world where academic performance often shapes confidence and opportunity, a common question among students and parents alike centers on final benchmarks—like keeping a target grade consistent across multiple assessments. Recent interest in a student scoring 85, 90, 92, and 88 on four math tests reveals a clear curiosity: what final score is needed to achieve a precise average of exactly 90? This isn’t just a math drill—it reflects deeper questions about consistency, growth, and measurable progress in education, especially during critical academic years. With many families tracking standards for school performance or college readiness, this question shows how data drives decision-making in everyday education. Understanding the math behind this average reveals an elegant balance between past results and future possibilities. To calculate the required fifth test score for an average of 90, start by averaging the known scores: 85 + 90 + 92 + 88 = 355. Since average grade = total points divided by number of tests, the goal is to find a fifth score, let’s call it x, such that (355 + x) ÷ 5 = 90. Multiplying both sides by 5 gives 355 + x = 450, then solving for x gives x = 450 – 355 = 95. A score of 95 balances the equation precisely—keeping the average grounded at 90. This problem highlights more than arithmetic—it reflects a broader pattern in educational tracking where multiple evaluations compound into long-term outcomes. Many students and educators rely on consistent performance across assessments to predict readiness for advanced courses, standardized tests, or scholarship eligibility. Achieving a 90 average through careful scoring emphasizes diligence, and underscores how small, deliberate progress compounds over time.