Page 85 - TB_5B
P. 85
Activity 3 Percent of a Number
A minor league pitcher has an 80%
chance of throwing a strike. Learn
different ways to find the number of
strikes the pitcher would throw if he
throws 20 balls.
Find 80% of 20 balls.
Place 20 green balls.
80% is equal to 4 , so divide the
5
balls into five equal groups.
Replace four groups of green balls
with red balls, and count the
number of red balls.
The total number of the red balls is 16.
Therefore, 80% of 20 throws is 16 strikes.
74
A minor league pitcher has an 80%
chance of throwing a strike. Learn
different ways to find the number of
strikes the pitcher would throw if he
throws 20 balls.
Find 80% of 20 balls.
Place 20 green balls.
80% is equal to 4 , so divide the
5
balls into five equal groups.
Replace four groups of green balls
with red balls, and count the
number of red balls.
The total number of the red balls is 16.
Therefore, 80% of 20 throws is 16 strikes.
74
