Question

explore percent problems
previously, you learned about representing percents. in this lesson, you will learn about solving problems with percents.

• use what you know to try to solve the problem below.

carolina and aniyah are playing in a chess tournament.
who has the better winning record so far?
wins
carolina: 19 out of 25 games
aniyah: 17 out of 20 games
math toolkit: double number lines, grid paper, hundredths grid
try it
discuss it
ask: how did you decide which player has the better winning record?
share: at first, i thought...
handwritten content:
carolina: 19/25
aniyah: 17/20
carolina has the winning rate so far.

Explanation:

Step1: Calculate Carolina's win percentage

$\text{Win percentage} = \frac{19}{25} \times 100 = 76\%$

Step2: Calculate Aniyah's win percentage

$\text{Win percentage} = \frac{17}{20} \times 100 = 85\%$

Step3: Compare the two percentages

$85\% > 76\%$

Answer:

Aniyah has the better winning record so far.