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

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. ______