Today's agenda! Get your clicker!!! 1. Bell Work: POW #8 2 ...
30
December 06, 2011 Today's agenda! Get your clicker!!! 1. Bell Work: POW #8 2. Notes/Examples: Ch. 6.3 3. HW: MB pg. 286 #28-36 Quiz Thursday! Sections 6.1-6.4
Transcript of Today's agenda! Get your clicker!!! 1. Bell Work: POW #8 2 ...
December 06, 2011
Today's agenda!Get your clicker!!!
1. Bell Work: POW #8
2. Notes/Examples: Ch. 6.3
3. HW: MB pg. 286 #28-36
Quiz Thursday! Sections 6.1-6.4
December 06, 2011
December 06, 2011
December 06, 2011
Your bill at Applebees' over the weekend came to $28.22. Estimate a 15% tip.
Estimate a 20% tip.
December 06, 2011
December 06, 2011
Finding the Percent One Number is of Another
There are two methods for finding percents of numbers:
December 06, 2011
Method 1: Set up a proportion.
% part100 whole
=
Think: What number is to 100 as 64 is to 144?
What percent of 144 is 64?
December 06, 2011
What percent of 144 is 64?
n 64100 144
=
% part100 whole
=
n = 100 64 ÷ 144
n ≈ 44.4
Substitute
Cross Multiply and Divide
Simplify
64 is approximately 44.4% of 144.
December 06, 2011
% whole part
=
Method 2: Set up an equation.
What percent of 144 is 64?n 144 = 64n 144 = 64
144 144n = 0.4
Set up an equation.
Divide both sides by 144.
Simplify.
64 is approximately 44.4% of 144.
December 06, 2011
Finding the Percent of a Number
What is 60% of 90?
December 06, 2011
0.8% of 20 is what number?
December 06, 2011
0.5% of 90 is what number?
December 06, 2011
ProportionEquation
December 06, 2011
Paul scored 15 points in his game against Lehman. If Jaret scored 80% of the points that Paul scored, how many points did Jaret score?
December 06, 2011
This year there are 445 eighth graders at Oakwood. Last year there were 88% as many 8th grade students at Oakwood. How many 8th grade students were at Oakwood last year? Round to the nearest whole number.
December 06, 2011
45 is what percent of 225?
Missing the Percent
December 06, 2011
84 is what percent of 56?
December 06, 2011
Savva bought a used car for $4500. He made a down payment of $900. What percent of the purchase price is his down payment?
December 06, 2011
Kristasia made 30 out of 35 free throws for the season. What percent of free throws did Kristasia make? Round to the nearest whole percent?
December 06, 2011
400 8th graders were surveyed. 255 8th graders said their favorite singer is Adele. 125 8th graders said their favorite singer is Katy Perry. What percent of 8th graders surveyed favor Adele? Do not round your answer.
December 06, 2011
December 06, 2011
When solving a problem when the percent is greater than 100, the whole will be less than the part.
150% of 50 is what number?
December 06, 2011
Proportion Equation
December 06, 2011
Compare - write <, >, or = .
3 70% 60% 3 58% 0.64 5
Order the numbers from least to greatest.
3 , 50% , 0.35 , 38%8
> = <
0.35, 3, 38%, 50% 8
December 06, 2011
Homework MB pg. 286 #28-36
December 06, 2011
1. What is 80% of 165? 132
2. 15% of what number is 6? 40
3. 34 is what percent of 85? 40%
December 06, 2011
4. What is 20% of 8? 1.6
5. 50% of what number is 931? 1,862
6. 190 is what percent of 304? 62.5%
December 06, 2011
7. What is 32% of 6350? 2032
8. 49 is what percent of 100% 49%
9. 2 is what percent of 200? 1%
December 06, 2011
10. What is 150% of 30? 45
11. 17% of 200 is what number? 34
12. 16 is what percent of 42? 38.1%
December 06, 2011
