Lesson 5-1 Guided Notes Name_________________________



Lesson 5-1 Guided Notes Name_________________________

Percent- A ratio that compares a number to __________________.

Write each ratio or fraction as a percent

According to the 2000 U.S. census, 13 out of every 100 people living in Delaware were 65 or older

Ans:__________________________

In 2001, Manny Ramirez got on base 40.5 times for every 100 times he was at bat.

Ans:__________________________

About 4 out of 5 commuters in the United States drive or carpool to work.

Ans:_______________________

The table below shows an estimate of the percent of his day that Peter spends on each activity. Write the percents for eating and sleeping as fractions in simplest form.

How Peter Spends His Day

35% Sleep________________

30% School______________

5% Eat________________

15% Television_______________

15% Other_____________________

Lesson 5-2 Guided Notes Fraftions, Decimals, Percents Name_________________

*To write a ____________ as a decimal, divide by 100 and remove the percent symbol.

*To write a ____________ as a percent, multiply by 100 and add the percent symbol.

Write Each Percent as a decimal

52%

Ans________________

245%

Ans:____________

Write each decimal as a percent

0.3

Ans______________________

0.71

Ans_______________________

Write each fraction as a percent and then a decimal

3/4

1/6

In Sun City, 9/20 of voters are Democrats. In Moon Town, 48% of voters are Democrats. In which town is there a greater proportion of Democrats?

Ans________________________

Lesson 5-3 The Percent Proportion Name_______________________

Percent Proportion:___________________________________________________

What number is 70% of 600?

Ans_____________________________

34 is what percent of 136?

Ans____________________

From 1999 to 2001, Derek Jeter had 11 hits with the bases loaded. This was about 30% of his at bats with the bases loaded. How many times was he at bat with the bases loaded?

Ans:_________________________

______________________________________________________________

Lesson 5-4 Computing Pecents Mentally

40% of 80

Ans___________________

66⅔% of 75

Ans_________________

1% of 304

Ans___________________

10% of 65

Ans____________________

A company produces 2,500 of a particular printer. They later discover that 25% of the printers have defects. How many printers from this group have defects?

Ans__________________________

Lesson 5-5 Name_________________ Perent and Estimation

Estimate

48% of 70

Ans_________________

75% of 98

Ans____________________

12% of 81

Ans____________________

Estimate Each Percent

12 out of 47

Ans___________________

19 out of 31

Ans____________________

41 out of 200

Ans_____________________

Lesson 5-6 Name______________________________

Percent Equation- is an equivalent form of the percent proportion in which the percent is written as a _____________________________.

Find 30% of 450.

Ans_________________

102 is what percent of 150?

Ans__________________

What percent of 90 is 180?

Ans___________________

144 is 45% of what number?

Ans____________________

The sales tax is 5 ¾% and the cost of the sweater is $75 what is the cost with tax

Ans____________________

Lesson 5-7 Percent Change Name________________________

Percent of Change- A ______________ of change that compares the change in quantity to the original amount.

Percent of Increase- When the new amount is _____________ than the original.

Percent of Decrease- When the new amount is ______________ than the original.

Percent of change =___________________________________

Find the Percent of change

The Nietos bought a house several years ago for $120,000. This year, they sold it for $150,000. Find the percent of increase.

Ans______________________

Johnson Middle School had 240 students last year. This year, there are 192 students. Find the percent of change. State whether this percent of change is an increase or decrease.

Ans____________________________

Markup- The _______________ in price.

Selling Price- Amount a customer pays for a ___________________.

Discount- The amount a regular price is ____________________

Shirts bought by a sporting goods store cost them $20 per shirt. They want to mark them up 40 percent. What will be the selling price?

Ans_____________

A computer usually sells for $1200. This week it is on sale for 30% off. What is the sale price?

Ans. ______________

Lesson 5-8 Simple Interest Name__________________________

Interest- the amount of money ______ or earned for the _______ of money

FORMULA FOR INTEREST - I = p r t

I = _____________

P - principal (money invested or _____________)

R - rate - annual ____________ rate as a decimal.

T - Time written in ____________

Find the simple interest for $2,000 invested at 5.5% for 4 years.

Ans____________

Find the total dollar amount in an account where $250 is invested at 6% for 6 months.

Ans_____________

Gerardo borrowed $4500 from his bank for home improvements. He will repay the loan by paying $120 a month for the next four years. Find the simple interest rate of the loan.

Ans. ___________

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