Batting averages, points per game　+　corrections

Both are "per one": per time at bat, per game

Name Date

Batting average in baseball

Batting average = hits ÷ times at bat (hits per time at bat)
Written to three decimal places (0.325). In Japan it is read with three old units: 0.1 = 1 wari, 0.01 = 1 bu, 0.001 = 1 rin → 0.325 = 3 wari 2 bu 5 rin (tenths, hundredths, thousandths).

1 · Batting average

1A player has 12 hits in 40 times at bat. Find the batting average as a decimal.

2Say 0.275 in wari, bu and rin. Then write 3 wari 1 bu 4 rin as a decimal.

3Find the average for 26 hits in 80 at bats, and say it in wari, bu and rin too.

4Find the average for 7 hits in 24 at bats, rounded to three decimal places.

Work to four decimal places, then round.

5Player A: 16 hits in 50 at bats. Player B: 18 hits in 60. B has more hits — but who has the higher average?

time yourself

Costume 2 · sport + correctionsSun 4 October2 / 2

Batting averages, points per game　+　corrections

Name Date

6A player batting 0.250 has had 120 at bats. How many hits is that?

2 · Points per game

7A football team scored 3, 1, 0, 2 and 4 goals in five games. How many goals a game on average?

average = total ÷ number of games. A game with 0 still counts as a game.

8A basketball team has averaged 64.5 points over 8 games. It wants an average of 65 after game 9. How many points does it need in game 9?

Find the 8-game total, and the total that 65 over 9 games needs.

3 · Corrections, and one puzzle problem

9From the corrections notebook, pick one you have not yet done a second time, and do it. September's fractions are fine.

10Chickens-and-rabbits — in a basketball game a player made 12 shots, some worth 2 points and some worth 3, scoring 29 points. How many 3-pointers?

First pretend all 12 were 2-pointers.