Batting Average

If a batter goes into a game with a seasonal batting average of S after a total of T times at bat, and gets K hits in that game for N times at bat, his new batting average is determined by this expression:

Batting Average Expression

Solve the above equation for the value of a specified unknown.

Subject: Mathematics
Topics: Algebra
Grades: 6 - 12
Knowledge and Skills:
- Can evaluate expressions by substituting values for variables
- Can simplify expressions using correct order of operations
- Can do basic operations on both sides of an equation in such a way as to preserve the equality

Download Teacher Guide: Batting Average (PDF)
Download Student Lesson: Batting Average (PDF)

First One in the BallparkFirst One in the Ballpark:

Determining who is the best athlete on the field is hardly a matter of opinion. Sports reporters stay ahead of the competition by arriving early and keeping a close watch on statistics.
Running time 2:11 minutes.

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