Tuesday, Oct 30

5 Minute CheckFind the following.1. What is .15 written as a percent?2. What is 0.399 written as a percent?3. What is 7 written as a percent?4. What is 575% written as a mixed number?5. What is 22.5% written as a fraction in simplest form?6. What is 6 written as a decimal?

5 Minute CheckFind the following.1. What is .15 written as a percent?5 Minute CheckFind the following.1. What is .15 written as a percent?.15 x 100 = 15%5 Minute CheckFind the following.2. What is 0.399 written as a percent?5 Minute CheckFind the following.2. What is 0.399 written as a percent?

.399 x 100 = 39.9%5 Minute CheckFind the following.3. What is 7 written as a percent?

5 Minute CheckFind the following.3. What is 7 written as a percent?

7 =

36 5 = 7.2

7.2 x 100 = 720%

5 Minute CheckFind the following.4. What is 575% written as a mixed number?5 Minute CheckFind the following.4. What is 575% written as a mixed number?

575 100 = 5.75

5.75 = 5

5 = 5

5 Minute CheckFind the following.5. What is 22.5% written as a fraction in simplest form?5 Minute CheckFind the following.5. What is 22.5% written as a fraction in simplest form?

22.5 100 = .225

.225 = =

5 Minute CheckFind the following.6. What is 6 written as a decimal?

5 Minute CheckFind the following.6. What is 6 written as a decimal?

6 =

25 4 = 6.25

Tuesday, Oct 1Lesson 2.7

Percent of a NumberPercent of a NumberObjective: To find the percent of a number.

Percent of a Number

Percent of a NumberAt the end of this lesson you should be able to answer the following questions.

How do you find the percent of a number?

Percent of a NumberThere are two methods to find the percent of a number.

Percent of a NumberFind 40% of 80.

Method 1Step 1 Set up a proportion.

40 ?100 = 80

Percent of a NumberFind 40% of 80.

Method 1Step 2 Simplify. 40 ?100 = 80

2 ? 5 = 80

Percent of a NumberFind 40% of 80.

Method 1Step 3 Cross Multiply.

2 ? 5 = 80

2 x 80 = 160 5 = 32

Percent of a NumberFind 60% of 90.

(Do this on your own)

Percent of a NumberFind 60% of 90.

(Do this on your own) 60 ? 100 = 90 3 ? 5 = 90

3 x 90 = 270 5 = 54

Percent of a NumberSuppose there are 300 students at Central Middle School. Find the number of students that have cheese as a snack. Method 2Step 1 Convert the percent to a decimal.

15% = .15

Percent of a NumberSuppose there are 300 students at Central Middle School. Find the number of students that have cheese as a snack. Method 2Step 2 Multiply the Decimal by the number.

.15 x 300 = 45

Percent of a NumberSuppose there are 300 students at Central Middle School. Find the number of students that have cheese as a snack. Find the number of students that have chips as a snack. (Do this on your own)

Percent of a NumberSuppose there are 300 students at Central Middle School. Find the number of students that have cheese as a snack. Find the number of students that have chips as a snack. 18% = .18.18 x 300 = 54

Percent of a NumberFind 145% of 320.

(Do this on your own)

Percent of a NumberFind 145% of 320.

145% = 1.451.45 x 320 = 464

Since the procedure to convert a percent to a decimal involves removing the percent sign, the answer should have no percent sign.

Percent of a NumberFind 145% of 320

Calculator Shortcut 145, press 2nd, press %, then 320, then press enter.

(You may want to write this down)

Percent of a NumberFind 220% of 65.

(Do this on your own)

Percent of a NumberFind 220% of 65.

220% = 2.22.2 x 65 = 143

Percent of a NumberFind .25% of 58.

(Do this on your own)

Percent of a NumberFind .25% of 58.

.25% = .0025.0025 x 58 = .145

Percent of a NumberFind 128% of 550.

(Do this on your own)

Percent of a NumberFind 128% of 550.

128% = 1.281.28 x 550 = 704

Percent of a NumberFind .3 % of 200.

(Do this on your own)

Percent of a NumberFind .3 % of 200.

.3% = .003.003 x 200 = .6

Percent of a NumberIn a recent state Special Olympics meet, Franklin County sent a team of 70 players. Twenty percent of the team competed in soccer. How many athletes competed in soccer?

(Do this on your own)

Percent of a NumberIn a recent state Special Olympics meet, Franklin County sent a team of 70 players. Twenty percent of the team competed in soccer. How many athletes competed in soccer? 20% = .20.2 x 70 = 14

Percent of a NumberIn this same meet 15% of the team from Delaware County competed in tennis. If there were 20 members on the team, how many played tennis?

(Do this on your own)

Percent of a NumberIn this same meet 15% of the team from Delaware County competed in tennis. If there were 20 members on the team, how many played tennis?

15% = .15.15 x 20 = 3

Percent of a NumberComplete the Guided Practice on page 150Agenda NotesHomework Homework Practice 2-7Due Wednesday, Oct 2Chapter 2 Test - Friday, Oct 4Due to conferences, no help session this chapter.