6th Grade Math Textbook, Progress

Percent Problems

12-6

The population of Manchester is 25,100.

Twenty-three percent of the population attends school.

How many people in Manchester attend school?

To find how many, find 23% of 25,100.

To find a percentage of a number, use r
bp.

First estimate: 23% of 25,100 25% of 24,000

^14 
24,000 6000

Then solve:23% of 25,100p

0.23
25,100p

5773 p

So 5773 people in Manchester attend school.

Manchester Middle School has 960 students enrolled.

Six hundred seventy-two of these students ride the

bus to school. What percent of the students ride

the bus to school?

To find the percent, find 672 out of 960.

To find the percent one number is of another, use 

p

b

r.

First estimate:^6

9

7

6

2

0

 

1

7

0

0

0

0

0



1

7

0

0

0

70%

0.70


Then solve:^6

9

7

6

2

0

r 960 
 6  7  2 .0 0 

70%r

So 70% of the students ride the bus to school.

1

6000

Think

70% is the same as the estimate.

Think

5773 is close to

the estimate of 6000.

1.4

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