If you’ve ever watched a baseball game, you’ve probably heard an announcer say something like “he’s batting .320.” That number is math. Specifically, it’s a decimal that comes from division.
A batting average is calculated by dividing the number of hits a player got by the number of times they went up to bat. If a player got 32 hits out of 100 at-bats, their average is 32 ÷ 100 = 0.320. Coaches use this exact division-into-decimals process (from Unit 4 and Unit 7) to decide who plays in important games.
It’s not just baseball. Basketball coaches track shooting percentage. If a player made 18 out of 25 free throws, that’s 18 ÷ 25 = 0.72, or 72%. Soccer statisticians track average goals per game by dividing total goals by total games played, which often doesn’t come out to a whole number; a player might average 1.4 goals per game.
Even something as simple as a runner’s average speed uses division: if someone runs 5 miles in 40 minutes, dividing tells you their pace per mile (8 minutes per mile).
👌Try it yourself: Pick a sport you like, find a stat (like a player’s free throw percentage), and see if you can figure out how it was calculated using division. Just like the pros do it.